diff --git a/spec/core_functions/math/abs.hrx b/spec/core_functions/math/abs.hrx
index faaf3ec47..545d0fc1c 100644
--- a/spec/core_functions/math/abs.hrx
+++ b/spec/core_functions/math/abs.hrx
@@ -1,13 +1,5 @@
-<===> options.yml
----
-:ignore_for:
-- libsass
-
-<===>
-================================================================================
 <===> zero/input.scss
-@use "sass:math";
-a {b: math.abs(0)}
+a {b: abs(0)}
 
 <===> zero/output.css
 a {
@@ -17,8 +9,7 @@ a {
 <===>
 ================================================================================
 <===> positive/integer/input.scss
-@use "sass:math";
-a {b: math.abs(1)}
+a {b: abs(1)}
 
 <===> positive/integer/output.css
 a {
@@ -28,8 +19,7 @@ a {
 <===>
 ================================================================================
 <===> positive/decimal/input.scss
-@use "sass:math";
-a {b: math.abs(5.6)}
+a {b: abs(5.6)}
 
 <===> positive/decimal/output.css
 a {
@@ -39,8 +29,7 @@ a {
 <===>
 ================================================================================
 <===> negative/integer/input.scss
-@use "sass:math";
-a {b: math.abs(-17)}
+a {b: abs(-17)}
 
 <===> negative/integer/output.css
 a {
@@ -50,8 +39,7 @@ a {
 <===>
 ================================================================================
 <===> negative/decimal/input.scss
-@use "sass:math";
-a {b: math.abs(-123.456)}
+a {b: abs(-123.456)}
 
 <===> negative/decimal/output.css
 a {
@@ -65,8 +53,7 @@ a {
   - sass/libsass#2887
 
 <===> preserves_units/input.scss
-@use "sass:math";
-a {b: math.abs(-7px / 4em) * 1em}
+a {b: abs(-7px / 4em) * 1em}
 
 <===> preserves_units/output.css
 a {
@@ -81,16 +68,15 @@ Recommendation: math.div(-7px, 4em)
 More info and automated migrator: https://sass-lang.com/d/slash-div
 
   ,
-2 | a {b: math.abs(-7px / 4em) * 1em}
-  |                ^^^^^^^^^^
+1 | a {b: abs(-7px / 4em) * 1em}
+  |           ^^^^^^^^^^
   '
-    input.scss 2:16  root stylesheet
+    input.scss 1:11  root stylesheet
 
 <===>
 ================================================================================
 <===> named/input.scss
-@use "sass:math";
-a { b: math.abs($number: 3)}
+a {b: abs($number: -3)}
 
 <===> named/output.css
 a {
@@ -100,71 +86,69 @@ a {
 <===>
 ================================================================================
 <===> error/type/input.scss
-@use "sass:math";
-a {b: math.abs(c)}
+a {b: abs(c)}
 
 <===> error/type/error
 Error: $number: c is not a number.
   ,
-2 | a {b: math.abs(c)}
-  |       ^^^^^^^^^^^
+1 | a {b: abs(c)}
+  |       ^^^^^^
   '
-  input.scss 2:7  root stylesheet
+  input.scss 1:7  root stylesheet
 
 <===> error/type/error-libsass
-Error: argument `$number` of `math.abs($number)` must be a number
+Error: argument `$number` of `abs($number)` must be a number
         on line 1:7 of input.scss, in function `round`
         from line 1:7 of input.scss
->> a {b: math.abs(c)}
+>> a {b: abs(c)}
 
    ------^
 
 <===>
 ================================================================================
 <===> error/too_few_args/input.scss
-@use "sass:math";
-a {b: math.abs()}
+a {b: abs()}
 
 <===> error/too_few_args/error
 Error: Missing argument $number.
   ,--> input.scss
-2 | a {b: math.abs()}
-  |       ^^^^^^^^^^ invocation
+1 | a {b: abs()}
+  |       ^^^^^ invocation
   '
   ,--> sass:math
 1 | @function abs($number) {
   |           ============ declaration
   '
-  input.scss 2:7  root stylesheet
+  input.scss 1:7  root stylesheet
 
 <===> error/too_few_args/error-libsass
 Error: Function abs is missing argument $number.
         on line 1 of input.scss
->> a {b: math.abs()}
+>> a {b: abs()}
 
    ------^
 
 <===>
 ================================================================================
 <===> error/too_many_args/input.scss
-@use "sass:math";
-a {b: math.abs(1, 2)}
+a {b: abs(1, 2)}
+
 
 <===> error/too_many_args/error
 Error: Only 1 argument allowed, but 2 were passed.
   ,--> input.scss
-2 | a {b: math.abs(1, 2)}
-  |       ^^^^^^^^^^^^^^ invocation
+1 | a {b: abs(1, 2)}
+  |       ^^^^^^^^^ invocation
   '
   ,--> sass:math
 1 | @function abs($number) {
   |           ============ declaration
   '
-  input.scss 2:7  root stylesheet
+  input.scss 1:7  root stylesheet
 
 <===> error/too_many_args/error-libsass
 Error: wrong number of arguments (2 for 1) for `abs'
         on line 1:7 of input.scss
->> a {b: math.abs(1, 2)}
+>> a {b: abs(1, 2)}
 
    ------^
diff --git a/spec/core_functions/math/round.hrx b/spec/core_functions/math/round.hrx
index e448d16d1..4bf635044 100644
--- a/spec/core_functions/math/round.hrx
+++ b/spec/core_functions/math/round.hrx
@@ -1,13 +1,5 @@
-<===> options.yml
----
-:ignore_for:
-- libsass
-
-<===>
-================================================================================
 <===> integer/input.scss
-@use "sass:math";
-a {b: math.round(1)}
+a {b: round(1)}
 
 <===> integer/output.css
 a {
@@ -17,8 +9,7 @@ a {
 <===>
 ================================================================================
 <===> up/high/input.scss
-@use "sass:math";
-a {b: math.round(2.9)}
+a {b: round(2.9)}
 
 <===> up/high/output.css
 a {
@@ -28,8 +19,7 @@ a {
 <===>
 ================================================================================
 <===> up/point_five/input.scss
-@use "sass:math";
-a {b: math.round(16.5)}
+a {b: round(16.5)}
 
 <===> up/point_five/output.css
 a {
@@ -39,8 +29,7 @@ a {
 <===>
 ================================================================================
 <===> up/negative/input.scss
-@use "sass:math";
-a {b: math.round(-5.4)}
+a {b: round(-5.4)}
 
 <===> up/negative/output.css
 a {
@@ -50,8 +39,7 @@ a {
 <===>
 ================================================================================
 <===> up/to_zero/input.scss
-@use "sass:math";
-a {b: math.round(-0.2)}
+a {b: round(-0.2)}
 
 <===> up/to_zero/output.css
 a {
@@ -61,8 +49,7 @@ a {
 <===>
 ================================================================================
 <===> down/low/input.scss
-@use "sass:math";
-a {b: math.round(2.2)}
+a {b: round(2.2)}
 
 <===> down/low/output.css
 a {
@@ -72,8 +59,7 @@ a {
 <===>
 ================================================================================
 <===> down/negative/input.scss
-@use "sass:math";
-a {b: math.round(-5.6)}
+a {b: round(-5.6)}
 
 <===> down/negative/output.css
 a {
@@ -83,8 +69,7 @@ a {
 <===>
 ================================================================================
 <===> down/to_zero/input.scss
-@use "sass:math";
-a {b: math.round(0.2)}
+a {b: round(0.2)}
 
 <===> down/to_zero/output.css
 a {
@@ -100,8 +85,7 @@ a {
 <===> down/within_precision/input.scss
 // This is the largest number that's representable as a float and outside the
 // precision range to be considered equal to 1.5.
-@use "sass:math";
-a {b: math.round(1.4999999999949998)}
+a {b: round(1.4999999999949998)}
 
 <===> down/within_precision/output.css
 a {
@@ -115,8 +99,7 @@ a {
   - sass/libsass#2887
 
 <===> preserves_units/input.scss
-@use "sass:math";
-a {b: math.round(7px / 4em) * 1em}
+a {b: round(7px / 4em) * 1em}
 
 <===> preserves_units/output.css
 a {
@@ -131,16 +114,15 @@ Recommendation: math.div(7px, 4em)
 More info and automated migrator: https://sass-lang.com/d/slash-div
 
   ,
-2 | a {b: math.round(7px / 4em) * 1em}
-  |                  ^^^^^^^^^
+1 | a {b: round(7px / 4em) * 1em}
+  |             ^^^^^^^^^
   '
-    input.scss 2:18  root stylesheet
+    input.scss 1:13  root stylesheet
 
 <===>
 ================================================================================
 <===> named/input.scss
-@use "sass:math";
-a {b: math.round($number: 1.6)}
+a {b: round($number: 1.6)}
 
 <===> named/output.css
 a {
@@ -150,16 +132,15 @@ a {
 <===>
 ================================================================================
 <===> error/type/input.scss
-@use "sass:math";
-a {b: math.round(c)}
+a {b: round(c)}
 
 <===> error/type/error
 Error: $number: c is not a number.
   ,
-2 | a {b: math.round(c)}
-  |       ^^^^^^^^^^^^^
+1 | a {b: round(c)}
+  |       ^^^^^^^^
   '
-  input.scss 2:7  root stylesheet
+  input.scss 1:7  root stylesheet
 
 <===> error/type/error-libsass
 Error: argument `$number` of `round($number)` must be a number
@@ -172,20 +153,19 @@ Error: argument `$number` of `round($number)` must be a number
 <===>
 ================================================================================
 <===> error/too_few_args/input.scss
-@use "sass:math";
-a {b: math.round()}
+a {b: round()}
 
 <===> error/too_few_args/error
 Error: Missing argument $number.
   ,--> input.scss
-2 | a {b: math.round()}
-  |       ^^^^^^^^^^^^ invocation
+1 | a {b: round()}
+  |       ^^^^^^^ invocation
   '
   ,--> sass:math
 1 | @function round($number) {
   |           ============== declaration
   '
-  input.scss 2:7  root stylesheet
+  input.scss 1:7  root stylesheet
 
 <===> error/too_few_args/error-libsass
 Error: Function round is missing argument $number.
@@ -197,21 +177,20 @@ Error: Function round is missing argument $number.
 <===>
 ================================================================================
 <===> error/too_many_args/input.scss
-@use "sass:math";
-a {b: math.round(1, 2)}
+a {b: round(1, 2)}
 
 
 <===> error/too_many_args/error
 Error: Only 1 argument allowed, but 2 were passed.
   ,--> input.scss
-2 | a {b: math.round(1, 2)}
-  |       ^^^^^^^^^^^^^^^^ invocation
+1 | a {b: round(1, 2)}
+  |       ^^^^^^^^^^^ invocation
   '
   ,--> sass:math
 1 | @function round($number) {
   |           ============== declaration
   '
-  input.scss 2:7  root stylesheet
+  input.scss 1:7  root stylesheet
 
 <===> error/too_many_args/error-libsass
 Error: wrong number of arguments (2 for 1) for `round'
diff --git a/spec/values/calculation/abs.hrx b/spec/values/calculation/abs.hrx
deleted file mode 100644
index d06e33694..000000000
--- a/spec/values/calculation/abs.hrx
+++ /dev/null
@@ -1,192 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `abs()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: abs(0)}
-
-<===> zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: abs(1)}
-
-<===> positive/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: abs(-5.6)}
-
-<===> negative/output.css
-a {
-  b: 5.6;
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: abs(1px + 2px - var(--c))
-}
-
-<===> simplification/output.css
-a {
-  b: abs(3px - var(--c));
-}
-
-<===>
-================================================================================
-<===> preserves_units/input.scss
-a {b: abs(-7px / 4em) * 1em}
-
-<===> preserves_units/output.css
-a {
-  b: 1.75px;
-}
-
-<===>
-================================================================================
-<===> preserves_single_unit/input.scss
-a {b: abs(1 + 1px)}
-
-<===> preserves_single_unit/output.css
-a {
-  b: 2px;
-}
-
-<===>
-================================================================================
-<===> sass_script/input.scss
-a {b: abs($number: -3)}
-
-<===> sass_script/output.css
-a {
-  b: 3;
-}
-
-<===>
-================================================================================
-<===> percentage_warning/input.scss
-a {b: abs(-7.5%)}
-
-<===> percentage_warning/output.css
-a {
-  b: 7.5%;
-}
-
-<===> percentage_warning/warning
-DEPRECATION WARNING: Passing percentage units to the global abs() function is deprecated.
-In the future, this will emit a CSS abs() function to be resolved by the browser.
-To preserve current behavior: math.abs(-7.5%)
-To emit a CSS abs() now: abs(#{-7.5%})
-More info: https://sass-lang.com/d/abs-percent
-  ,
-1 | a {b: abs(-7.5%)}
-  | ^^^^^^^^^^^^^^^^^
-  '
-    input.scss 1:1  root stylesheet
-
-<===>
-================================================================================
-<===> math/slash_as_division/input.scss
-b {
-  a: 2px / abs(1.5);
-}
-
-<===> math/slash_as_division/output.css
-b {
-  a: 1.3333333333px;
-}
-
-<===> math/slash_as_division/warning
-DEPRECATION WARNING: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0.
-Recommendation: math.div(2px, abs(1.5)) or calc(2px / abs(1.5))
-More info and automated migrator: https://sass-lang.com/d/slash-div
-  ,
-2 |   a: 2px / abs(1.5);
-  |      ^^^^^^^^^^^^^^
-  '
-    input.scss 2:6  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script_and_variable/input.scss
-a {b: abs($number: var(--c))}
-
-<===> error/sass_script_and_variable/error
-Error: $number: var(--c) is not a number.
-  ,
-1 | a {b: abs($number: var(--c))}
-  |       ^^^^^^^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: abs("0")}
-
-<===> error/type/error
-Error: $number: "0" is not a number.
-  ,
-1 | a {b: abs("0")}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: abs()}
-
-<===> error/too_few_args/error
-Error: Missing argument $number.
-  ,--> input.scss
-1 | a {b: abs()}
-  |       ^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function abs($number) {
-  |           ============ declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: abs(1, 2)}
-
-<===> error/too_many_args/error
-Error: Only 1 argument allowed, but 2 were passed.
-  ,--> input.scss
-1 | a {b: abs(1, 2)}
-  |       ^^^^^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function abs($number) {
-  |           ============ declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: abs($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: abs($)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
diff --git a/spec/values/calculation/acos.hrx b/spec/values/calculation/acos.hrx
deleted file mode 100644
index 35081f4eb..000000000
--- a/spec/values/calculation/acos.hrx
+++ /dev/null
@@ -1,169 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `acos()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> less_than_negative_one/input.scss
-a {b: acos(-2)}
-
-<===> less_than_negative_one/output.css
-a {
-  b: calc(NaN * 1deg);
-}
-
-<===>
-================================================================================
-<===> negative_one/input.scss
-a {b: acos(-1)}
-
-<===> negative_one/output.css
-a {
-  b: 180deg;
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: acos(0)}
-
-<===> zero/output.css
-a {
-  b: 90deg;
-}
-
-<===>
-================================================================================
-<===> one/input.scss
-a {b: acos(1)}
-
-<===> one/output.css
-a {
-  b: 0deg;
-}
-
-<===>
-================================================================================
-<===> greater_than_one/input.scss
-a {b: acos(2)}
-
-<===> greater_than_one/output.css
-a {
-  b: calc(NaN * 1deg);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: acos(3px - 1px + var(--c));
-}
-
-<===> simplification/output.css
-a {
-  b: acos(2px + var(--c));
-}
-
-<===>
-================================================================================
-<===> error/unit/unknown/input.scss
-a {b: acos(1%)}
-
-<===> error/unit/unknown/error
-Error: Expected 1% to have no units.
-  ,
-1 | a {b: acos(1%)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/known/input.scss
-a {b: acos(1px)}
-
-<===> error/unit/known/error
-Error: Expected 1px to have no units.
-  ,
-1 | a {b: acos(1px)}
-  |       ^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/complex/input.scss
-a {b: acos(-7px / 4em)}
-
-<===> error/unit/complex/error
-Error: Expected -1.75px/em to have no units.
-  ,
-1 | a {b: acos(-7px / 4em)}
-  |       ^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: acos("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: acos("0")}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: acos()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: acos()}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: acos(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: acos(0, 0)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: acos($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: acos($)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: acos(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: acos(7 % 3)}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
diff --git a/spec/values/calculation/asin.hrx b/spec/values/calculation/asin.hrx
deleted file mode 100644
index 0731aceaa..000000000
--- a/spec/values/calculation/asin.hrx
+++ /dev/null
@@ -1,169 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `asin()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> less_than_negative_one/input.scss
-a {b: asin(-2)}
-
-<===> less_than_negative_one/output.css
-a {
-  b: calc(NaN * 1deg);
-}
-
-<===>
-================================================================================
-<===> negative_one/input.scss
-a {b: asin(-1)}
-
-<===> negative_one/output.css
-a {
-  b: -90deg;
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: asin(0)}
-
-<===> zero/output.css
-a {
-  b: 0deg;
-}
-
-<===>
-================================================================================
-<===> one/input.scss
-a {b: asin(1)}
-
-<===> one/output.css
-a {
-  b: 90deg;
-}
-
-<===>
-================================================================================
-<===> greater_than_one/input.scss
-a {b: asin(2)}
-
-<===> greater_than_one/output.css
-a {
-  b: calc(NaN * 1deg);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: asin(3px - 1px + var(--c));
-}
-
-<===> simplification/output.css
-a {
-  b: asin(2px + var(--c));
-}
-
-<===>
-================================================================================
-<===> error/unit/unknown/input.scss
-a {b: asin(1%)}
-
-<===> error/unit/unknown/error
-Error: Expected 1% to have no units.
-  ,
-1 | a {b: asin(1%)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/known/input.scss
-a {b: asin(1px)}
-
-<===> error/unit/known/error
-Error: Expected 1px to have no units.
-  ,
-1 | a {b: asin(1px)}
-  |       ^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/complex/input.scss
-a {b: asin(-7px / 4em)}
-
-<===> error/unit/complex/error
-Error: Expected -1.75px/em to have no units.
-  ,
-1 | a {b: asin(-7px / 4em)}
-  |       ^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: asin("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: asin("0")}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: asin()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: asin()}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: asin(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: asin(0, 0)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: asin($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: asin($)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: asin(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: asin(7 % 3)}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
diff --git a/spec/values/calculation/atan.hrx b/spec/values/calculation/atan.hrx
deleted file mode 100644
index c1e3d88cf..000000000
--- a/spec/values/calculation/atan.hrx
+++ /dev/null
@@ -1,146 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `atan()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> negative_infinity/input.scss
-a {b: atan(-infinity)}
-
-<===> negative_infinity/output.css
-a {
-  b: -90deg;
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: atan(0)}
-
-<===> zero/output.css
-a {
-  b: 0deg;
-}
-
-<===>
-================================================================================
-<===> one/input.scss
-a {b: atan(1)}
-
-<===> one/output.css
-a {
-  b: 45deg;
-}
-
-<===>
-================================================================================
-<===> infinity/input.scss
-a {b: atan(infinity)}
-
-<===> infinity/output.css
-a {
-  b: 90deg;
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: atan(3px - 1px + var(--c));
-}
-
-<===> simplification/output.css
-a {
-  b: atan(2px + var(--c));
-}
-
-<===>
-================================================================================
-<===> error/unit/unknown/input.scss
-a {b: atan(1%)}
-
-<===> error/unit/unknown/error
-Error: Expected 1% to have no units.
-  ,
-1 | a {b: atan(1%)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/known/input.scss
-a {b: atan(1px)}
-
-<===> error/unit/known/error
-Error: Expected 1px to have no units.
-  ,
-1 | a {b: atan(1px)}
-  |       ^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/complex/input.scss
-a {b: atan(-7px / 4em)}
-
-<===> error/unit/complex/error
-Error: Expected -1.75px/em to have no units.
-  ,
-1 | a {b: atan(-7px / 4em)}
-  |       ^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: atan("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: atan("0")}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: atan()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: atan()}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: atan(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: atan(0, 0)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: atan(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: atan(7 % 3)}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
diff --git a/spec/values/calculation/atan2.hrx b/spec/values/calculation/atan2.hrx
deleted file mode 100644
index 11d3247be..000000000
--- a/spec/values/calculation/atan2.hrx
+++ /dev/null
@@ -1,212 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `atan2()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> units/none/input.scss
-a {b: atan2(1, -10)}
-
-<===> units/none/output.css
-a {
-  b: 174.2894068625deg;
-}
-
-<===>
-================================================================================
-<===> units/compatible/input.scss
-a {b: atan2(1cm, -10mm)}
-
-<===> units/compatible/output.css
-a {
-  b: 135deg;
-}
-
-<===>
-================================================================================
-<===> units/real_and_unknown/input.scss
-a {b: atan2(1px, 10%)}
-
-<===> units/real_and_unknown/output.css
-a {
-  b: atan2(1px, 10%);
-}
-
-<===>
-================================================================================
-<===> units/unknown/input.scss
-a {
-  b: atan2(1%, 2%);
-}
-
-<===> units/unknown/output.css
-a {
-  b: atan2(1%, 2%);
-}
-
-<===>
-================================================================================
-<===> units/fake/input.scss
-a {
-  b: atan2(1foo, 2bar);
-}
-
-<===> units/fake/output.css
-a {
-  b: atan2(1foo, 2bar);
-}
-
-<===>
-================================================================================
-<===> units/same_fake/input.scss
-a {
-  b: atan2(1foo, 2foo);
-}
-
-<===> units/same_fake/output.css
-a {
-  b: 26.5650511771deg;
-}
-
-<===>
-================================================================================
-<===> units/real_and_fake/input.scss
-a {
-  b: atan2(1px, 2bar);
-}
-
-<===> units/real_and_fake/output.css
-a {
-  b: atan2(1px, 2bar);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: atan2(3px - 1px + var(--c), -7px / 4em * 1em);
-}
-
-<===> simplification/output.css
-a {
-  b: atan2(2px + var(--c), -1.75px);
-}
-
-<===>
-================================================================================
-<===> error/units/unitless_and_real/input.scss
-a {b: atan2(1, 1px)}
-
-<===> error/units/unitless_and_real/error
-Error: 1 and 1px are incompatible.
-  ,
-1 | a {b: atan2(1, 1px)}
-  |             ^ 1
-  |                === 1px
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/known_incompatible/input.scss
-a {b: atan2(1deg, 1px)}
-
-<===> error/units/known_incompatible/error
-Error: 1deg and 1px are incompatible.
-  ,
-1 | a {b: atan2(1deg, 1px)}
-  |             ^^^^ 1deg
-  |                   === 1px
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/complex_and_unknown/input.scss
-a {b: atan2(1px*2px, 10%)}
-
-<===> error/units/complex_and_unknown/error
-Error: Number 2px*px isn't compatible with CSS calculations.
-  ,
-1 | a {b: atan2(1px*2px, 10%)}
-  |             ^^^^^^^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: atan2(1, $)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: atan2(1, $)}
-  |                 ^
-  '
-  input.scss 1:17  root stylesheet
-
-<===>
-================================================================================
-<===> error/x_type/input.scss
-a {b: atan2(0, "0")}
-
-<===> error/x_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: atan2(0, "0")}
-  |                ^
-  '
-  input.scss 1:16  root stylesheet
-
-<===>
-================================================================================
-<===> error/y_type/input.scss
-a {b: atan2("0", 0)}
-
-<===> error/y_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: atan2("0", 0)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: atan2(0)}
-
-<===> error/too_few_args/error
-Error: 2 arguments required, but only 1 was passed.
-  ,
-1 | a {b: atan2(0)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: atan2(0, 0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: atan2(0, 0, 0)}
-  |                 ^
-  '
-  input.scss 1:17  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: atan2(7 % 3, 1)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", ",", or ")".
-  ,
-1 | a {b: atan2(7 % 3, 1)}
-  |               ^
-  '
-  input.scss 1:15  root stylesheet
diff --git a/spec/values/calculation/cos.hrx b/spec/values/calculation/cos.hrx
deleted file mode 100644
index f8b513517..000000000
--- a/spec/values/calculation/cos.hrx
+++ /dev/null
@@ -1,189 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `cos()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> deg/input.scss
-a {b: cos(1deg)}
-
-<===> deg/output.css
-a {
-  b: 0.9998476952;
-}
-
-<===>
-================================================================================
-<===> grad/input.scss
-a {b: cos(1grad)}
-
-<===> grad/output.css
-a {
-  b: 0.9998766325;
-}
-
-<===>
-================================================================================
-<===> rad/input.scss
-a {b: cos(1rad)}
-
-<===> rad/output.css
-a {
-  b: 0.5403023059;
-}
-
-<===>
-================================================================================
-<===> turn/input.scss
-a {b: cos(1turn)}
-
-<===> turn/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> negative_infinity/input.scss
-a {b: cos(-infinity)}
-
-<===> negative_infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: cos(0)}
-
-<===> zero/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> infinity/input.scss
-a {b: cos(infinity)}
-
-<===> infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: cos(3px - 1px + var(--c));
-}
-
-<===> simplification/output.css
-a {
-  b: cos(2px + var(--c));
-}
-
-<===>
-================================================================================
-<===> error/unit/unknown/input.scss
-a {b: cos(1%)}
-
-<===> error/unit/unknown/error
-Error: $number: Expected 1% to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: cos(1%)}
-  |       ^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/known/input.scss
-a {b: cos(1px)}
-
-<===> error/unit/known/error
-Error: $number: Expected 1px to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: cos(1px)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/complex/input.scss
-a {b: cos(-7px / 4em)}
-
-<===> error/unit/complex/error
-Error: $number: Expected -1.75px/em to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: cos(-7px / 4em)}
-  |       ^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: cos("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: cos("0")}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: cos()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: cos()}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: cos(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: cos(0, 0)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: cos($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: cos($)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: cos(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: cos(7 % 3)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
diff --git a/spec/values/calculation/exp.hrx b/spec/values/calculation/exp.hrx
deleted file mode 100644
index 307fa827a..000000000
--- a/spec/values/calculation/exp.hrx
+++ /dev/null
@@ -1,147 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `exp()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: exp(0)}
-
-<===> zero/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: exp(5)}
-
-<===> positive/output.css
-a {
-  b: 148.4131591026;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: exp(-10.5)}
-
-<===> negative/output.css
-a {
-  b: 0.0000275364;
-}
-
-<===>
-================================================================================
-<===> result_is_infinity/input.scss
-a {b: exp(1000.65)}
-
-<===> result_is_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: exp(1px + 2px - var(--c))
-}
-
-<===> simplification/output.css
-a {
-  b: exp(3px - var(--c));
-}
-
-<===>
-================================================================================
-<===> error/units/unknown/input.scss
-a {b: exp(1%)}
-
-<===> error/units/unknown/error
-Error: Expected 1% to have no units.
-  ,
-1 | a {b: exp(1%)}
-  |       ^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/unit/known/input.scss
-a {b: exp(1px)}
-
-<===> error/unit/known/error
-Error: Expected 1px to have no units.
-  ,
-1 | a {b: exp(1px)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: exp("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: exp("0")}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: exp()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: exp()}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: exp(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: exp(0, 0)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: exp($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: exp($)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: exp(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: exp(7 % 3)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
diff --git a/spec/values/calculation/hypot.hrx b/spec/values/calculation/hypot.hrx
deleted file mode 100644
index d1a124a5c..000000000
--- a/spec/values/calculation/hypot.hrx
+++ /dev/null
@@ -1,247 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `hypot()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> units/none/input.scss
-a {b: hypot(3, 4, 5, 6, 7)}
-
-<===> units/none/output.css
-a {
-  b: 11.6189500386;
-}
-
-<===>
-================================================================================
-<===> units/compatible/input.scss
-a {b: hypot(13cm, 4mm, 5q, 6in, 7px)}
-
-<===> units/compatible/output.css
-a {
-  b: 20.0366545892cm;
-}
-
-<===>
-================================================================================
-<===> units/real_and_unknown/input.scss
-a {b: hypot(13cm, 4%)}
-
-<===> units/real_and_unknown/output.css
-a {
-  b: hypot(13cm, 4%);
-}
-
-<===>
-================================================================================
-<===> units/unknown/input.scss
-a {
-  b: hypot(1%, 2%);
-}
-
-<===> units/unknown/output.css
-a {
-  b: hypot(1%, 2%);
-}
-
-<===>
-================================================================================
-<===> units/fake/input.scss
-a {
-  b: hypot(1foo, 2bar);
-}
-
-<===> units/fake/output.css
-a {
-  b: hypot(1foo, 2bar);
-}
-
-<===>
-================================================================================
-<===> units/same_fake/input.scss
-a {
-  b: hypot(1foo, 2foo);
-}
-
-<===> units/same_fake/output.css
-a {
-  b: 2.2360679775foo;
-}
-
-<===>
-================================================================================
-<===> units/real_and_fake/input.scss
-a {
-  b: hypot(1px, 2bar);
-}
-
-<===> units/real_and_fake/output.css
-a {
-  b: hypot(1px, 2bar);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: hypot(1px + 2px - var(--c), -7px + 4em)
-}
-
-<===> simplification/output.css
-a {
-  b: hypot(3px - var(--c), -7px + 4em);
-}
-
-<===>
-================================================================================
-<===> infinity/first/input.scss
-a {b: hypot(infinity, 1, 1)}
-
-<===> infinity/first/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> infinity/second/input.scss
-a {b: hypot(1, infinity, 1)}
-
-<===> infinity/second/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> error/unsimplifiable/input.scss
-a {b: hypot(-7px / 4em)}
-
-<===> error/unsimplifiable/error
-Error: Number -1.75px/em isn't compatible with CSS calculations.
-  ,
-1 | a {b: hypot(-7px / 4em)}
-  |             ^^^^^^^^^^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/incompatible/first_and_second/input.scss
-a {b: hypot(1deg, 1px, 1turn)}
-
-<===> error/units/incompatible/first_and_second/error
-Error: 1deg and 1px are incompatible.
-  ,
-1 | a {b: hypot(1deg, 1px, 1turn)}
-  |             ^^^^ 1deg
-  |                   === 1px
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/incompatible/first_and_third/input.scss
-a {b: hypot(1deg, 1turn, 1px)}
-
-<===> error/units/incompatible/first_and_third/error
-Error: 1deg and 1px are incompatible.
-  ,
-1 | a {b: hypot(1deg, 1turn, 1px)}
-  |             ^^^^ 1deg
-  |                          === 1px
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/incompatible/second_and_third/input.scss
-a {b: hypot(1turn, 1deg, 1px)}
-
-<===> error/units/incompatible/second_and_third/error
-Error: 1turn and 1px are incompatible.
-  ,
-1 | a {b: hypot(1turn, 1deg, 1px)}
-  |             ^^^^^ 1turn
-  |                          === 1px
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/real_and_unitless/input.scss
-a {b: hypot(1px, 1)}
-
-<===> error/units/real_and_unitless/error
-Error: 1px and 1 are incompatible.
-  ,
-1 | a {b: hypot(1px, 1)}
-  |             ^^^ 1px
-  |                  = 1
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/first_type/input.scss
-a {b: hypot("0", 1px, 1px)}
-
-<===> error/first_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: hypot("0", 1px, 1px)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/second_type/input.scss
-a {b: hypot(1px, "0", 1px)}
-
-<===> error/second_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: hypot(1px, "0", 1px)}
-  |                  ^
-  '
-  input.scss 1:18  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: hypot()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: hypot()}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: hypot(12, $, 14)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: hypot(12, $, 14)}
-  |                  ^
-  '
-  input.scss 1:18  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: hypot(7 % 3, 1)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", ",", or ")".
-  ,
-1 | a {b: hypot(7 % 3, 1)}
-  |               ^
-  '
-  input.scss 1:15  root stylesheet
diff --git a/spec/values/calculation/log.hrx b/spec/values/calculation/log.hrx
deleted file mode 100644
index c2481a490..000000000
--- a/spec/values/calculation/log.hrx
+++ /dev/null
@@ -1,248 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `log()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: log(-1)}
-
-<===> negative/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: log(0)}
-
-<===> zero/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: log(2)}
-
-<===> positive/output.css
-a {
-  b: 0.6931471806;
-}
-
-<===>
-================================================================================
-<===> infinity/input.scss
-a {b: log(infinity)}
-
-<===> infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> base/negative/input.scss
-a {b: log(2, -1)}
-
-<===> base/negative/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> base/zero/input.scss
-a {b: log(2, 0)}
-
-<===> base/zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> base/between_zero_and_one/input.scss
-a {b: log(2, 0.5)}
-
-<===> base/between_zero_and_one/output.css
-a {
-  b: -1;
-}
-
-<===>
-================================================================================
-<===> base/one/input.scss
-a {b: log(2, 1)}
-
-<===> base/one/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> base/positive/input.scss
-a {b: log(2, 10)}
-
-<===> base/positive/output.css
-a {
-  b: 0.3010299957;
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: log(3px - 1px + var(--c), var(--e));
-}
-
-<===> simplification/output.css
-a {
-  b: log(2px + var(--c), var(--e));
-}
-
-<===>
-================================================================================
-<===> error/units/unknown/input.scss
-a {b: log(1%)}
-
-<===> error/units/unknown/error
-Error: Expected 1% to have no units.
-  ,
-1 | a {b: log(1%)}
-  |       ^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/unitless_and_real/input.scss
-a {b: log(1, 1px)}
-
-<===> error/units/unitless_and_real/error
-Error: Expected 1px to have no units.
-  ,
-1 | a {b: log(1, 1px)}
-  |       ^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/known_incompatible/input.scss
-a {b: log(1deg, 1px)}
-
-<===> error/units/known_incompatible/error
-Error: Expected 1deg to have no units.
-  ,
-1 | a {b: log(1deg, 1px)}
-  |       ^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/complex_and_unknown/input.scss
-a {b: log(1px*2px, 10%)}
-
-<===> error/units/complex_and_unknown/error
-Error: Expected 2px*px to have no units.
-  ,
-1 | a {b: log(1px*2px, 10%)}
-  |       ^^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/known/input.scss
-a {b: log(3px)}
-
-<===> error/units/known/error
-Error: Expected 3px to have no units.
-  ,
-1 | a {b: log(3px)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/number_type/input.scss
-a {b: log("0")}
-
-<===> error/number_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: log("0")}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/base_type/input.scss
-a {b: log(0, "0")}
-
-<===> error/base_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: log(0, "0")}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: log()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: log()}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: log(0, 0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: log(0, 0, 0)}
-  |               ^
-  '
-  input.scss 1:15  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: log($, 10)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: log($, 10)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: log(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", ",", or ")".
-  ,
-1 | a {b: log(7 % 3)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
diff --git a/spec/values/calculation/max.hrx b/spec/values/calculation/max.hrx
index 9139e063f..7364ce9e8 100644
--- a/spec/values/calculation/max.hrx
+++ b/spec/values/calculation/max.hrx
@@ -86,10 +86,10 @@ Error: 1c and 3 are incompatible.
 
 <===>
 ================================================================================
-<===> error/unitless_and_real/in_calc/input.scss
+<===> error/unitless_and_unit/in_calc/input.scss
 a {b: max(calc(1px + 2))}
 
-<===> error/unitless_and_real/in_calc/error
+<===> error/unitless_and_unit/in_calc/error
 Error: 1px and 2 are incompatible.
   ,
 1 | a {b: max(calc(1px + 2))}
@@ -183,10 +183,10 @@ a {
 
 <===>
 ================================================================================
-<===> simplified/unitless_and_real/input.scss
+<===> simplified/unitless_and_unit/input.scss
 a {b: max(1px, 2.5, 0.9px)}
 
-<===> simplified/unitless_and_real/output.css
+<===> simplified/unitless_and_unit/output.css
 a {
   b: 2.5;
 }
@@ -203,10 +203,10 @@ a {
 
 <===>
 ================================================================================
-<===> simplified/operation/unitless_and_real/input.scss
+<===> simplified/operation/unitless_and_unit/input.scss
 a {b: max(1px, 2.5 + 0.9px)}
 
-<===> simplified/operation/unitless_and_real/output.css
+<===> simplified/operation/unitless_and_unit/output.css
 a {
   b: 3.4px;
 }
@@ -284,52 +284,30 @@ b {
 
 <===>
 ================================================================================
-<===> preserved/operation/unitless_and_real/plus/input.scss
+<===> preserved/operation/unitless_and_unit/plus/input.scss
 a {b: max(1%, 2.5 + 0.9px)}
 
-<===> preserved/operation/unitless_and_real/plus/output.css
+<===> preserved/operation/unitless_and_unit/plus/output.css
 a {
   b: max(1%, 3.4px);
 }
 
 <===>
 ================================================================================
-<===> preserved/operation/unitless_and_real/minus/input.scss
+<===> preserved/operation/unitless_and_unit/minus/input.scss
 a {b: max(1%, 2.5 - 0.9px)}
 
-<===> preserved/operation/unitless_and_real/minus/output.css
+<===> preserved/operation/unitless_and_unit/minus/output.css
 a {
   b: max(1%, 1.6px);
 }
 
 <===>
 ================================================================================
-<===> preserved/operation/unitless_and_real/in_calc/input.scss
+<===> preserved/operation/unitless_and_unit/in_calc/input.scss
 a {b: calc(max(1%, 2.5 + 0.9px))}
 
-<===> preserved/operation/unitless_and_real/in_calc/output.css
+<===> preserved/operation/unitless_and_unit/in_calc/output.css
 a {
   b: max(1%, 3.4px);
 }
-
-<===>
-================================================================================
-<===> math/slash_as_division/input.scss
-b { 
-  a: 2px / max(1.5);
-}
-
-<===> math/slash_as_division/output.css
-b {
-  a: 1.3333333333px;
-}
-
-<===> math/slash_as_division/warning
-DEPRECATION WARNING: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0.
-Recommendation: math.div(2px, max(1.5)) or calc(2px / max(1.5))
-More info and automated migrator: https://sass-lang.com/d/slash-div
-  ,
-2 |   a: 2px / max(1.5);
-  |      ^^^^^^^^^^^^^^
-  '
-    input.scss 2:6  root stylesheet
diff --git a/spec/values/calculation/min.hrx b/spec/values/calculation/min.hrx
index ab07a967a..768f763a2 100644
--- a/spec/values/calculation/min.hrx
+++ b/spec/values/calculation/min.hrx
@@ -86,10 +86,10 @@ Error: 1c and 3 are incompatible.
 
 <===>
 ================================================================================
-<===> error/unitless_and_real/in_calc/input.scss
+<===> error/unitless_and_unit/in_calc/input.scss
 a {b: min(calc(1px + 2))}
 
-<===> error/unitless_and_real/in_calc/error
+<===> error/unitless_and_unit/in_calc/error
 Error: 1px and 2 are incompatible.
   ,
 1 | a {b: min(calc(1px + 2))}
@@ -193,80 +193,80 @@ a {
 
 <===>
 ================================================================================
-<===> simplified/unitless_and_real/input.scss
+<===> simplified/unitless_and_unit/input.scss
 a {b: min(1px, 2.5, 0.9px)}
 
-<===> simplified/unitless_and_real/output.css
+<===> simplified/unitless_and_unit/output.css
 a {
   b: 0.9px;
 }
 
 <===>
 ================================================================================
-<===> simplified/operation/unitless_and_real/input.scss
+<===> simplified/operation/unitless_and_unit/input.scss
 a {b: min(1px, 2.5 + 0.9px)}
 
-<===> simplified/operation/unitless_and_real/output.css
+<===> simplified/operation/unitless_and_unit/output.css
 a {
   b: 1px;
 }
 
 <===>
 ================================================================================
-<===> preserved/math/first/input.scss
+<===> perserved/math/first/input.scss
 a {b: min(1% + 1px, 2px)}
 
-<===> preserved/math/first/output.css
+<===> perserved/math/first/output.css
 a {
   b: min(1% + 1px, 2px);
 }
 
 <===>
 ================================================================================
-<===> preserved/math/second/input.scss
+<===> perserved/math/second/input.scss
 a {b: min(1px, 1% + 2px)}
 
-<===> preserved/math/second/output.css
+<===> perserved/math/second/output.css
 a {
   b: min(1px, 1% + 2px);
 }
 
 <===>
 ================================================================================
-<===> preserved/math/third/input.scss
+<===> perserved/math/third/input.scss
 a {b: min(1px, 2px, 1% + 3px)}
 
-<===> preserved/math/third/output.css
+<===> perserved/math/third/output.css
 a {
   b: min(1px, 2px, 1% + 3px);
 }
 
 <===>
 ================================================================================
-<===> preserved/unit/first/input.scss
+<===> perserved/unit/first/input.scss
 a {b: min(1%, 2px)}
 
-<===> preserved/unit/first/output.css
+<===> perserved/unit/first/output.css
 a {
   b: min(1%, 2px);
 }
 
 <===>
 ================================================================================
-<===> preserved/unit/second/input.scss
+<===> perserved/unit/second/input.scss
 a {b: min(1px, 2%)}
 
-<===> preserved/unit/second/output.css
+<===> perserved/unit/second/output.css
 a {
   b: min(1px, 2%);
 }
 
 <===>
 ================================================================================
-<===> preserved/unit/third/input.scss
+<===> perserved/unit/third/input.scss
 a {b: min(1px, 2px, 3%)}
 
-<===> preserved/unit/third/output.css
+<===> perserved/unit/third/output.css
 a {
   b: min(1px, 2px, 3%);
 }
@@ -284,52 +284,30 @@ b {
 
 <===>
 ================================================================================
-<===> preserved/operation/unitless_and_real/plus/input.scss
+<===> preserved/operation/unitless_and_unit/plus/input.scss
 a {b: min(1%, 2.5 + 0.9px)}
 
-<===> preserved/operation/unitless_and_real/plus/output.css
+<===> preserved/operation/unitless_and_unit/plus/output.css
 a {
   b: min(1%, 3.4px);
 }
 
 <===>
 ================================================================================
-<===> preserved/operation/unitless_and_real/minus/input.scss
+<===> preserved/operation/unitless_and_unit/minus/input.scss
 a {b: min(1%, 2.5 - 0.9px)}
 
-<===> preserved/operation/unitless_and_real/minus/output.css
+<===> preserved/operation/unitless_and_unit/minus/output.css
 a {
   b: min(1%, 1.6px);
 }
 
 <===>
 ================================================================================
-<===> preserved/operation/unitless_and_real/in_calc/input.scss
+<===> preserved/operation/unitless_and_unit/in_calc/input.scss
 a {b: calc(min(1%, 2.5 + 0.9px))}
 
-<===> preserved/operation/unitless_and_real/in_calc/output.css
+<===> preserved/operation/unitless_and_unit/in_calc/output.css
 a {
   b: min(1%, 3.4px);
 }
-
-<===>
-================================================================================
-<===> math/slash_as_division/input.scss
-b { 
-  a: 2px / min(1.5);
-}
-
-<===> math/slash_as_division/output.css
-b {
-  a: 1.3333333333px;
-}
-
-<===> math/slash_as_division/warning
-DEPRECATION WARNING: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0.
-Recommendation: math.div(2px, min(1.5)) or calc(2px / min(1.5))
-More info and automated migrator: https://sass-lang.com/d/slash-div
-  ,
-2 |   a: 2px / min(1.5);
-  |      ^^^^^^^^^^^^^^
-  '
-    input.scss 2:6  root stylesheet
diff --git a/spec/values/calculation/mod.hrx b/spec/values/calculation/mod.hrx
deleted file mode 100644
index 4f3e9cd61..000000000
--- a/spec/values/calculation/mod.hrx
+++ /dev/null
@@ -1,374 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `mod()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> units/none/input.scss
-a {b: mod(7, 3)}
-
-<===> units/none/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> units/compatible/input.scss
-a {b: mod(5px, 3px)}
-
-<===> units/compatible/output.css
-a {
-  b: 2px;
-}
-
-<===>
-================================================================================
-<===> units/real_and_unknown/input.scss
-a {b: mod(5px, 3%)}
-
-<===> units/real_and_unknown/output.css
-a {
-  b: mod(5px, 3%);
-}
-
-<===>
-================================================================================
-<===> units/unknown/input.scss
-a {
-  b: mod(1%, 2%);
-}
-
-<===> units/unknown/output.css
-a {
-  b: 1%;
-}
-
-<===>
-================================================================================
-<===> units/fake/input.scss
-a {
-  b: mod(1foo, 2bar);
-}
-
-<===> units/fake/output.css
-a {
-  b: mod(1foo, 2bar);
-}
-
-<===>
-================================================================================
-<===> units/same_fake/input.scss
-a {
-  b: mod(1foo, 2foo);
-}
-
-<===> units/same_fake/output.css
-a {
-  b: 1foo;
-}
-
-<===>
-================================================================================
-<===> units/real_and_fake/input.scss
-a {
-  b: mod(1px, 2bar);
-}
-
-<===> units/real_and_fake/output.css
-a {
-  b: mod(1px, 2bar);
-}
-
-<===>
-================================================================================
-<===> equals/input.scss
-a {b: mod(1, 1)}
-
-<===> equals/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> positive_and_negative/input.scss
-a {b: mod(2, -5)}
-
-<===> positive_and_negative/output.css
-a {
-  b: -3;
-}
-
-<===>
-================================================================================
-<===> negative_and_positive/input.scss
-a {b: mod(-2, 5)}
-
-<===> negative_and_positive/output.css
-a {
-  b: 3;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: mod(-2, -5)}
-
-<===> negative/output.css
-a {
-  b: -2;
-}
-
-<===>
-================================================================================
-<===> y_zero/input.scss
-a {b: mod(6, 0)}
-
-<===> y_zero/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> x_zero/input.scss
-a {b: mod(0, 6)}
-
-<===> x_zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> zeros/input.scss
-a {b: mod(0, 0)}
-
-<===> zeros/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> y_infinity/positive/input.scss
-a {b: mod(infinity, 10)}
-
-<===> y_infinity/positive/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> x_infinity/positive/input.scss
-a {b: mod(-10, infinity)}
-
-<===> x_infinity/positive/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> x_infinity/negative/input.scss
-a {b: mod(10, -infinity)}
-
-<===> x_infinity/negative/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: mod(3px - 1px + var(--c), -7px / 4em * 1em);
-}
-
-<===> simplification/output.css
-a {
-  b: mod(2px + var(--c), -1.75px);
-}
-
-<===>
-================================================================================
-<===> positive_zero/input.scss
-@use "sass:math";
-a {b: math.div(1, mod(7, 7))}
-
-<===> positive_zero/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_zero/input.scss
-@use "sass:math";
-a {b: math.div(1, mod(-7, 7))}
-
-<===> negative_zero/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> error/units/real_and_unitless/input.scss
-a {b: mod(16px, 5)}
-
-<===> error/units/real_and_unitless/error
-Error: 16px and 5 are incompatible.
-  ,
-1 | a {b: mod(16px, 5)}
-  |           ^^^^ 16px
-  |                 = 5
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/incompatible/input.scss
-a {b: mod(16px, 5deg)}
-
-<===> error/units/incompatible/error
-Error: 16px and 5deg are incompatible.
-  ,
-1 | a {b: mod(16px, 5deg)}
-  |           ^^^^ 16px
-  |                 ==== 5deg
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/complex_and_unknown/input.scss
-a {b: mod(1px*2px, 10%)}
-
-<===> error/units/complex_and_unknown/error
-Error: Number 2px*px isn't compatible with CSS calculations.
-  ,
-1 | a {b: mod(1px*2px, 10%)}
-  |           ^^^^^^^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: mod(3)}
-
-<===> error/too_few_args/error
-Error: 2 arguments required, but only 1 was passed.
-  ,
-1 | a {b: mod(3)}
-  |       ^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: mod(10, $)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: mod(10, $)}
-  |                ^
-  '
-  input.scss 1:16  root stylesheet
-
-<===>
-================================================================================
-<===> error/modulus_type/input.scss
-a {b: mod(0, "0")}
-
-<===> error/modulus_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: mod(0, "0")}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
-
-<===>
-================================================================================
-<===> error/dividend_type/input.scss
-a {b: mod("0", 0)}
-
-<===> error/dividend_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: mod("0", 0)}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: mod(3, 2, 1)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: mod(3, 2, 1)}
-  |               ^
-  '
-  input.scss 1:15  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: mod(7 % 3, 1)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", ",", or ")".
-  ,
-1 | a {b: mod(7 % 3, 1)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> nan/negative_zero_and_positive_infinity/input.scss
-a {b: mod(-0, infinity)}
-
-<===> nan/negative_zero_and_positive_infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> nan/zero_and_negative_infinity/input.scss
-a {b: mod(0, -infinity)}
-
-<===> nan/zero_and_negative_infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> nan/negative_and_positive_infinity/input.scss
-a {b: mod(-5, infinity)}
-
-<===> nan/negative_and_positive_infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> nan/positive_and_negative_infinity/input.scss
-a {b: mod(5, -infinity)}
-
-<===> nan/positive_and_negative_infinity/output.css
-a {
-  b: calc(NaN);
-}
diff --git a/spec/values/calculation/pow.hrx b/spec/values/calculation/pow.hrx
deleted file mode 100644
index c9d74478d..000000000
--- a/spec/values/calculation/pow.hrx
+++ /dev/null
@@ -1,190 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `pow()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: pow(10, 10)}
-
-<===> positive/output.css
-a {
-  b: 10000000000;
-}
-
-<===>
-================================================================================
-<===> base/negative/input.scss
-a {b: pow(-10, 10)}
-
-<===> base/negative/output.css
-a {
-  b: 10000000000;
-}
-
-<===>
-================================================================================
-<===> exponent/negative/input.scss
-a {b: pow(10, -10)}
-
-<===> exponent/negative/output.css
-a {
-  b: 0.0000000001;
-}
-
-<===>
-================================================================================
-<===> zeros/input.scss
-a {b: pow(0, 0)}
-
-<===> zeros/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> y_infinity/positive/input.scss
-a {b: pow(infinity, 10)}
-
-<===> y_infinity/positive/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> x_infinity/positive/input.scss
-a {b: pow(10, infinity)}
-
-<===> x_infinity/positive/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {b: pow(3px - 1px + var(--c), 4px + 10px)}
-
-<===> simplification/output.css
-a {
-  b: pow(2px + var(--c), 14px);
-}
-
-<===>
-================================================================================
-<===> error/units/compatible/input.scss
-a {b: pow(10px, 10px)}
-
-<===> error/units/compatible/error
-Error: Expected 10px to have no units.
-  ,
-1 | a {b: pow(10px, 10px)}
-  |       ^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/unknown_and_unitless/input.scss
-a {b: pow(10%, 10)}
-
-<===> error/units/unknown_and_unitless/error
-Error: Expected 10% to have no units.
-  ,
-1 | a {b: pow(10%, 10)}
-  |       ^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/real_and_unitless/input.scss
-a {b: pow(10px, 10)}
-
-<===> error/units/real_and_unitless/error
-Error: Expected 10px to have no units.
-  ,
-1 | a {b: pow(10px, 10)}
-  |       ^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: pow(10, $)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: pow(10, $)}
-  |                ^
-  '
-  input.scss 1:16  root stylesheet
-
-<===>
-================================================================================
-<===> error/base_type/input.scss
-a {b: pow(0, "0")}
-
-<===> error/base_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: pow(0, "0")}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
-
-<===>
-================================================================================
-<===> error/exponent_type/input.scss
-a {b: pow("0", 0)}
-
-<===> error/exponent_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: pow("0", 0)}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: pow(3)}
-
-<===> error/too_few_args/error
-Error: 2 arguments required, but only 1 was passed.
-  ,
-1 | a {b: pow(3)}
-  |       ^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: pow(3, 2, 1)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: pow(3, 2, 1)}
-  |               ^
-  '
-  input.scss 1:15  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: pow(7 % 3, 1)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", ",", or ")".
-  ,
-1 | a {b: pow(7 % 3, 1)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
diff --git a/spec/values/calculation/rem.hrx b/spec/values/calculation/rem.hrx
deleted file mode 100644
index aa5aefd88..000000000
--- a/spec/values/calculation/rem.hrx
+++ /dev/null
@@ -1,376 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `rem()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> units/none/input.scss
-a {b: rem(7, 3)}
-
-<===> units/none/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> units/compatible/input.scss
-a {b: rem(5px, 3px)}
-
-<===> units/compatible/output.css
-a {
-  b: 2px;
-}
-
-<===>
-================================================================================
-<===> units/real_and_unknown/input.scss
-a {b: rem(5px, 3%)}
-
-<===> units/real_and_unknown/output.css
-a {
-  b: rem(5px, 3%);
-}
-
-<===>
-================================================================================
-<===> units/unknown/input.scss
-a {
-  b: rem(1%, 2%);
-}
-
-<===> units/unknown/output.css
-a {
-  b: 1%;
-}
-
-<===>
-================================================================================
-<===> units/fake/input.scss
-a {
-  b: rem(1foo, 2bar);
-}
-
-<===> units/fake/output.css
-a {
-  b: rem(1foo, 2bar);
-}
-
-<===>
-================================================================================
-<===> units/same_fake/input.scss
-a {
-  b: rem(1foo, 2foo);
-}
-
-<===> units/same_fake/output.css
-a {
-  b: 1foo;
-}
-
-<===>
-================================================================================
-<===> units/real_and_fake/input.scss
-a {
-  b: rem(1px, 2bar);
-}
-
-<===> units/real_and_fake/output.css
-a {
-  b: rem(1px, 2bar);
-}
-
-<===>
-================================================================================
-<===> equals/input.scss
-a {b: rem(1, 1)}
-
-<===> equals/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> positive_and_negative/input.scss
-a {b: rem(2, -5)}
-
-<===> positive_and_negative/output.css
-a {
-  b: 2;
-}
-
-<===>
-================================================================================
-<===> negative_and_positive/input.scss
-a {b: rem(-2, 5)}
-
-<===> negative_and_positive/output.css
-a {
-  b: -2;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: rem(-2, -5)}
-
-<===> negative/output.css
-a {
-  b: -2;
-}
-
-<===>
-================================================================================
-<===> y_zero/input.scss
-a {b: rem(6, 0)}
-
-<===> y_zero/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> x_zero/input.scss
-a {b: rem(0, 6)}
-
-<===> x_zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> zeros/input.scss
-a {b: rem(0, 0)}
-
-<===> zeros/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> y_infinity/positive/input.scss
-a {b: rem(infinity, 10)}
-
-<===> y_infinity/positive/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> x_infinity/positive/input.scss
-a {b: rem(-10, infinity)}
-
-<===> x_infinity/positive/output.css
-a {
-  b: -10;
-}
-
-<===>
-================================================================================
-<===> x_infinity/negative/input.scss
-a {b: rem(10, -infinity)}
-
-<===> x_infinity/negative/output.css
-a {
-  b: 10;
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: rem(3px - 1px + var(--c), -7px / 4em * 1em);
-}
-
-<===> simplification/output.css
-a {
-  b: rem(2px + var(--c), -1.75px);
-}
-
-<===>
-================================================================================
-<===> positive_zero/input.scss
-@use "sass:math";
-a {b: math.div(1, rem(7, 7))}
-
-<===> positive_zero/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_zero/input.scss
-@use "sass:math";
-a {b: math.div(1, rem(-7, 7))}
-
-<===> negative_zero/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> error/units/real_and_unitless/input.scss
-a {b: rem(16px, 5)}
-
-<===> error/units/real_and_unitless/error
-Error: 16px and 5 are incompatible.
-  ,
-1 | a {b: rem(16px, 5)}
-  |           ^^^^ 16px
-  |                 = 5
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/incompatible/input.scss
-a {b: rem(16px, 5deg)}
-
-<===> error/units/incompatible/error
-Error: 16px and 5deg are incompatible.
-  ,
-1 | a {b: rem(16px, 5deg)}
-  |           ^^^^ 16px
-  |                 ==== 5deg
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/complex_and_unknown/input.scss
-a {b: rem(1px*2px, 10%)}
-
-<===> error/units/complex_and_unknown/error
-Error: Number 2px*px isn't compatible with CSS calculations.
-  ,
-1 | a {b: rem(1px*2px, 10%)}
-  |           ^^^^^^^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: rem(3)}
-
-<===> error/too_few_args/error
-Error: 2 arguments required, but only 1 was passed.
-  ,
-1 | a {b: rem(3)}
-  |       ^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: rem(10, $)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: rem(10, $)}
-  |                ^
-  '
-  input.scss 1:16  root stylesheet
-
-<===>
-================================================================================
-<===> error/modulus_type/input.scss
-a {b: rem(0, "0")}
-
-<===> error/modulus_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: rem(0, "0")}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
-
-<===>
-================================================================================
-<===> error/dividend_type/input.scss
-a {b: rem("0", 0)}
-
-<===> error/dividend_type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: rem("0", 0)}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: rem(3, 2, 1)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: rem(3, 2, 1)}
-  |               ^
-  '
-  input.scss 1:15  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: rem(7 % 3, 1)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", ",", or ")".
-  ,
-1 | a {b: rem(7 % 3, 1)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> negative_zero_and_positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, rem(-0, infinity))}
-
-<===> negative_zero_and_positive_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> zero_and_negative_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, rem(0, -infinity))}
-
-<===> zero_and_negative_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_and_positive_infinity/input.scss
-a {b: rem(-5, infinity)}
-
-<===> negative_and_positive_infinity/output.css
-a {
-  b: -5;
-}
-
-<===>
-================================================================================
-<===> positive_and_negative_infinity/input.scss
-a {b: rem(5, -infinity)}
-
-<===> positive_and_negative_infinity/output.css
-a {
-  b: 5;
-}
diff --git a/spec/values/calculation/round/error.hrx b/spec/values/calculation/round/error.hrx
deleted file mode 100644
index 71d557dea..000000000
--- a/spec/values/calculation/round/error.hrx
+++ /dev/null
@@ -1,250 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> too_few_args/input.scss
-a {b: round()}
-
-<===> too_few_args/error
-Error: Missing argument $number.
-  ,--> input.scss
-1 | a {b: round()}
-  |       ^^^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function round($number) {
-  |           ============== declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> too_many_args/input.scss
-a {b: round(1, 2, 3, 4)}
-
-<===> too_many_args/error
-Error: Only 1 argument allowed, but 4 were passed.
-  ,--> input.scss
-1 | a {b: round(1, 2, 3, 4)}
-  |       ^^^^^^^^^^^^^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function round($number) {
-  |           ============== declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> one_argument/sass_script/variable_named_argument/input.scss
-a {b: round($number: var(--c))}
-
-<===> one_argument/sass_script/variable_named_argument/error
-Error: $number: var(--c) is not a number.
-  ,
-1 | a {b: round($number: var(--c))}
-  |       ^^^^^^^^^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> one_argument/unsimplifiable/input.scss
-a {b: round(1px + 2px - var(--c))}
-
-<===> one_argument/unsimplifiable/error
-Error: Single argument 3px - var(--c) expected to be simplifiable.
-  ,
-1 | a {b: round(1px + 2px - var(--c))}
-  |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> one_argument/type/input.scss
-a {b: round("0")}
-
-<===> one_argument/type/error
-Error: $number: "0" is not a number.
-  ,
-1 | a {b: round("0")}
-  |       ^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> one_argument/syntax/invalid_arg/input.scss
-a {b: round($)}
-
-<===> one_argument/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: round($)}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/units/real_and_unitless/input.scss
-a {b: round(10px, 5)}
-
-<===> two_argument/units/real_and_unitless/error
-Error: 10px and 5 are incompatible.
-  ,
-1 | a {b: round(10px, 5)}
-  |             ^^^^ 10px
-  |                   = 5
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/units/known_incompatible/input.scss
-a {b: round(10deg, 5px)}
-
-<===> two_argument/units/known_incompatible/error
-Error: 10deg and 5px are incompatible.
-  ,
-1 | a {b: round(10deg, 5px)}
-  |             ^^^^^ 10deg
-  |                    === 5px
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/units/complex_and_unknown/input.scss
-a {b: round(1px*2px, 10%)}
-
-<===> two_argument/units/complex_and_unknown/error
-Error: Number 2px*px isn't compatible with CSS calculations.
-  ,
-1 | a {b: round(1px*2px, 10%)}
-  |             ^^^^^^^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/missing_step/input.scss
-a {b: round(nearest, 5)}
-
-<===> two_argument/missing_step/error
-Error: If strategy is not null, step is required.
-  ,
-1 | a {b: round(nearest, 5)}
-  |       ^^^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/x_type/input.scss
-a {b: round(0, "0")}
-
-<===> two_argument/x_type/error
-Error: Only 1 argument allowed, but 2 were passed.
-  ,--> input.scss
-1 | a {b: round(0, "0")}
-  |       ^^^^^^^^^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function round($number) {
-  |           ============== declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/y_type/input.scss
-a {b: round("0", 0)}
-
-<===> two_argument/y_type/error
-Error: Only 1 argument allowed, but 2 were passed.
-  ,--> input.scss
-1 | a {b: round("0", 0)}
-  |       ^^^^^^^^^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function round($number) {
-  |           ============== declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> two_argument/sass_script/input.scss
-a {b: round(7 % 3, 1)}
-
-<===> two_argument/sass_script/error
-Error: Only 1 argument allowed, but 2 were passed.
-  ,--> input.scss
-1 | a {b: round(7 % 3, 1)}
-  |       ^^^^^^^^^^^^^^^ invocation
-  '
-  ,--> sass:math
-1 | @function round($number) {
-  |           ============== declaration
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> three_argument/strategy/operation/input.scss
-a {
-  e: round(10px + 2px, 8px, 9px);
-}
-<===> three_argument/strategy/operation/error
-Error: 12px must be either nearest, up, down or to-zero.
-  ,
-2 |   e: round(10px + 2px, 8px, 9px);
-  |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-  '
-  input.scss 2:6  root stylesheet
-
-<===>
-================================================================================
-<===> three_argument/strategy_type/input.scss
-$wrong_input: "nearest";
-a {b: round($wrong_input, 0, 0)}
-
-<===> three_argument/strategy_type/error
-Error: Value "nearest" can't be used in a calculation.
-  ,
-2 | a {b: round($wrong_input, 0, 0)}
-  |             ^^^^^^^^^^^^
-  '
-  input.scss 2:13  root stylesheet
-
-<===>
-================================================================================
-<===> three_argument/number_type/input.scss
-$wrong_input: "0";
-a {b: round(nearest, $wrong_input, 0)}
-
-<===> three_argument/number_type/error
-Error: Value "0" can't be used in a calculation.
-  ,
-2 | a {b: round(nearest, $wrong_input, 0)}
-  |                      ^^^^^^^^^^^^
-  '
-  input.scss 2:22  root stylesheet
-
-<===>
-================================================================================
-<===> three_argument/step_type/input.scss
-$wrong_input: "0";
-a {b: round(nearest, 0, $wrong_input)}
-
-<===> three_argument/step_type/error
-Error: Value "0" can't be used in a calculation.
-  ,
-2 | a {b: round(nearest, 0, $wrong_input)}
-  |                         ^^^^^^^^^^^^
-  '
-  input.scss 2:25  root stylesheet
diff --git a/spec/values/calculation/round/one_argument.hrx b/spec/values/calculation/round/one_argument.hrx
deleted file mode 100644
index 8f6735ecb..000000000
--- a/spec/values/calculation/round/one_argument.hrx
+++ /dev/null
@@ -1,97 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: round(0)}
-
-<===> zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: round(1)}
-
-<===> positive/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: round(-5.6)}
-
-<===> negative/output.css
-a {
-  b: -6;
-}
-
-<===>
-================================================================================
-<===> preserves_units/input.scss
-a {b: round(-7px / 4em) * 1em}
-
-<===> preserves_units/output.css
-a {
-  b: -2px;
-}
-
-<===>
-================================================================================
-<===> preserves_single_unit/input.scss
-a {b: round(1 + 1px)}
-
-<===> preserves_single_unit/output.css
-a {
-  b: 2px;
-}
-
-<===>
-================================================================================
-<===> preserved/variable/input.scss
-a {
-  b: round(var(--c))
-}
-
-<===> preserved/variable/output.css
-a {
-  b: round(var(--c));
-}
-
-<===>
-================================================================================
-<===> sass_script/input.scss
-a {b: round($number: -3)}
-
-<===> sass_script/output.css
-a {
-  b: -3;
-}
-
-<===>
-================================================================================
-<===> math/slash_as_division/input.scss
-b {
-  a: 2px / round(1.5);
-}
-
-<===> math/slash_as_division/output.css
-b {
-  a: 1px;
-}
-
-<===> math/slash_as_division/warning
-DEPRECATION WARNING: Using / for division outside of calc() is deprecated and will be removed in Dart Sass 2.0.0.
-Recommendation: math.div(2px, round(1.5)) or calc(2px / round(1.5))
-More info and automated migrator: https://sass-lang.com/d/slash-div
-  ,
-2 |   a: 2px / round(1.5);
-  |      ^^^^^^^^^^^^^^^^
-  '
-    input.scss 2:6  root stylesheet
diff --git a/spec/values/calculation/round/strategy/README.md b/spec/values/calculation/round/strategy/README.md
deleted file mode 100644
index 8a4aaa82a..000000000
--- a/spec/values/calculation/round/strategy/README.md
+++ /dev/null
@@ -1,5 +0,0 @@
-# Three-argument round strategy testing
-
-Tests the `round()` function with the various combinations of rounding modes to cover all possibilities and edge cases to ensure robustness. Some tests are based on [web-platform-tests] for the CSS round function.
-
-[web-platform-tests]: https://github.com/web-platform-tests/wpt/blob/master/css/css-values/round-function.html
diff --git a/spec/values/calculation/round/strategy/down.hrx b/spec/values/calculation/round/strategy/down.hrx
deleted file mode 100644
index 19e39b684..000000000
--- a/spec/values/calculation/round/strategy/down.hrx
+++ /dev/null
@@ -1,188 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> step_is_multiple_of_number/input.scss
-a {b: round(down, 5px, 25px)}
-
-<===> step_is_multiple_of_number/output.css
-a {
-  b: 0px;
-}
-
-<===>
-================================================================================
-<===> number_is_multiple_of_step/input.scss
-a {b: round(down, 25px, 5px)}
-
-<===> number_is_multiple_of_step/output.css
-a {
-  b: 25px;
-}
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: round(down, 122px, 25px)}
-
-<===> positive/output.css
-a {
-  b: 100px;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: round(down, -101, -25)}
-
-<===> negative/output.css
-a {
-  b: -125;
-}
-
-<===>
-================================================================================
-<===> negative_step/input.scss
-a {b: round(down, 12, -7)}
-
-<===> negative_step/output.css
-a {
-  b: 7;
-}
-
-<===>
-================================================================================
-<===> infinity/input.scss
-a {b: round(down, infinity, infinity)}
-
-<===> infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> step_is_zero/input.scss
-a {b: round(down, 10px, 0px)}
-
-<===> step_is_zero/output.css
-a {
-  b: calc(NaN * 1px);
-}
-
-<===>
-================================================================================
-<===> positive_and_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(down, 10, infinity))}
-
-<===> positive_and_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_and_infinity/input.scss
-@use "sass:math";
-a {b: round(down, -10, infinity)}
-
-<===> negative_and_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_bigger/input.scss
-a {b: round(down, 23px, 10px)}
-
-<===> upper_multiple/number_is_bigger/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_smaller/input.scss
-a {b: round(down, 18px, 10px)}
-
-<===> upper_multiple/number_is_smaller/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_half/input.scss
-a {b: round(down, 15px, 10px)}
-
-<===> upper_multiple/number_is_half/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_negative/input.scss
-a {b: round(down, -13px, 10px)}
-
-<===> upper_multiple/number_is_negative/output.css
-a {
-  b: -20px;
-}
-
-<===>
-================================================================================
-<===> lower_multiple/number_is_bigger/input.scss
-a {b: round(down, 13px, 10px)}
-
-<===> lower_multiple/number_is_bigger/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> lower_multiple/number_is_negative/input.scss
-a {b: round(down, -18px, 10px)}
-
-<===> lower_multiple/number_is_negative/output.css
-a {
-  b: -20px;
-}
-
-<===>
-================================================================================
-<===> negative_zero/positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(down, -1 * 0, infinity))}
-
-<===> negative_zero/positive_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> positive_zero/zero/input.scss
-@use "sass:math";
-a {b: math.div(1, round(down, 0, infinity))}
-
-<===> positive_zero/zero/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> positive_zero/one/input.scss
-@use "sass:math";
-a {b: math.div(1, round(down, 1, infinity))}
-
-<===> positive_zero/one/output.css
-a {
-  b: calc(infinity);
-}
diff --git a/spec/values/calculation/round/strategy/nearest.hrx b/spec/values/calculation/round/strategy/nearest.hrx
deleted file mode 100644
index 743b56244..000000000
--- a/spec/values/calculation/round/strategy/nearest.hrx
+++ /dev/null
@@ -1,227 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: round(nearest, 3.8px - 1px + var(--test), 1.1px + 4px)}
-
-<===> simplification/output.css
-a {
-  b: round(nearest, 2.8px + var(--test), 5.1px);
-}
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: round(nearest, 117px, 25px)}
-
-<===> positive/output.css
-a {
-  b: 125px;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: round(nearest, -101, -25)}
-
-<===> negative/output.css
-a {
-  b: -100;
-}
-
-<===>
-================================================================================
-<===> step_is_zero/input.scss
-a {b: round(nearest, 10px, 0px)}
-
-<===> step_is_zero/output.css
-a {
-  b: calc(NaN * 1px);
-}
-
-<===>
-================================================================================
-<===> positive_and_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(nearest, 10, infinity))}
-
-<===> positive_and_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_and_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(nearest, -10, infinity))}
-
-<===> negative_and_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> infinity_and_negative/input.scss
-a {b: round(nearest, infinity, -5)}
-
-<===> infinity_and_negative/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> infinity_and_positive/input.scss
-a {b: round(nearest, infinity, 5)}
-
-<===> infinity_and_positive/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_infinity_and_negative/input.scss
-a {b: round(nearest, -infinity, -5)}
-
-<===> negative_infinity_and_negative/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> negative_infinity_and_positive/input.scss
-a {b: round(nearest, -infinity, 5)}
-
-<===> negative_infinity_and_positive/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> infinity/negative/input.scss
-a {b: round(nearest, -infinity, -infinity)}
-
-<===> infinity/negative/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> infinity/negative_and_positive/input.scss
-a {b: round(nearest, -infinity, infinity)}
-
-<===> infinity/negative_and_positive/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> infinity/positive_and_negative/input.scss
-a {b: round(nearest, infinity, -infinity)}
-
-<===> infinity/positive_and_negative/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> infinity/positive_and_positive/input.scss
-@use "sass:math";
-a {b: round(nearest, infinity, infinity)}
-
-<===> infinity/positive_and_positive/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> step_is_multiple_of_number/input.scss
-a {b: round(nearest, 5px, 25px)}
-
-<===> step_is_multiple_of_number/output.css
-a {
-  b: 0px;
-}
-
-<===>
-================================================================================
-<===> number_is_multiple_of_step/input.scss
-a {b: round(nearest, 25px, 5px)}
-
-<===> number_is_multiple_of_step/output.css
-a {
-  b: 25px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_bigger/input.scss
-a {b: round(nearest, 23px, 10px)}
-
-<===> upper_multiple/number_is_bigger/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_smaller/input.scss
-a {b: round(nearest, 18px, 10px)}
-
-<===> upper_multiple/number_is_smaller/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_half/input.scss
-a {b: round(nearest, 15px, 10px)}
-
-<===> upper_multiple/number_is_half/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_negative/input.scss
-a {b: round(nearest, -13px, 10px)}
-
-<===> upper_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> lower_multiple/number_is_bigger/input.scss
-a {b: round(nearest, 13px, 10px)}
-
-<===> lower_multiple/number_is_bigger/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> lower_multiple/number_is_negative/input.scss
-a {b: round(nearest, -18px, 10px)}
-
-<===> lower_multiple/number_is_negative/output.css
-a {
-  b: -20px;
-}
diff --git a/spec/values/calculation/round/strategy/to-zero.hrx b/spec/values/calculation/round/strategy/to-zero.hrx
deleted file mode 100644
index 8d9b36628..000000000
--- a/spec/values/calculation/round/strategy/to-zero.hrx
+++ /dev/null
@@ -1,127 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> strategy/to-zero/positive/input.scss
-a {b: round(to-zero, 120px, 25px)}
-
-<===> strategy/to-zero/positive/output.css
-a {
-  b: 100px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/negative/input.scss
-a {b: round(to-zero, -120px, -25px)}
-
-<===> strategy/to-zero/negative/output.css
-a {
-  b: -125px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/upper_multiple/number_is_bigger/input.scss
-a {b: round(to-zero, 23px, 10px)}
-
-<===> strategy/to-zero/upper_multiple/number_is_bigger/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/upper_multiple/number_is_smaller/input.scss
-a {b: round(to-zero, 18px, 10px)}
-
-<===> strategy/to-zero/upper_multiple/number_is_smaller/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/upper_multiple/number_is_half/input.scss
-a {b: round(to-zero, 15px, 10px)}
-
-<===> strategy/to-zero/upper_multiple/number_is_half/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/upper_multiple/number_is_negative/input.scss
-a {b: round(to-zero, -13px, 10px)}
-
-<===> strategy/to-zero/upper_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/lower_multiple/number_is_bigger/input.scss
-a {b: round(to-zero, 13px, 10px)}
-
-<===> strategy/to-zero/lower_multiple/number_is_bigger/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/lower_multiple/number_is_negative/input.scss
-a {b: round(to-zero, -18px, 10px)}
-
-<===> strategy/to-zero/lower_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/negative_zero/positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(to-zero, -5, infinity))}
-
-<===> strategy/to-zero/negative_zero/positive_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/negative_zero/negative_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(to-zero, -5, -infinity))}
-
-<===> strategy/to-zero/negative_zero/negative_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/positive_zero/positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(to-zero, 5, infinity))}
-
-<===> strategy/to-zero/positive_zero/positive_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/to-zero/positive_zero/negative_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(to-zero, 5, -infinity))}
-
-<===> strategy/to-zero/positive_zero/negative_infinity/output.css
-a {
-  b: calc(infinity);
-}
diff --git a/spec/values/calculation/round/strategy/up.hrx b/spec/values/calculation/round/strategy/up.hrx
deleted file mode 100644
index 9bf46be19..000000000
--- a/spec/values/calculation/round/strategy/up.hrx
+++ /dev/null
@@ -1,187 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> strategy/up/positive/input.scss
-a {b: round(up, 101px, 25px)}
-
-<===> strategy/up/positive/output.css
-a {
-  b: 125px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/step_is_multiple_of_number/input.scss
-a {b: round(up, 5px, 25px)}
-
-<===> strategy/up/step_is_multiple_of_number/output.css
-a {
-  b: 25px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/number_is_multiple_of_step/input.scss
-a {b: round(up, 25px, 5px)}
-
-<===> strategy/up/number_is_multiple_of_step/output.css
-a {
-  b: 25px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/negative/input.scss
-a {b: round(up, -101, -25)}
-
-<===> strategy/up/negative/output.css
-a {
-  b: -100;
-}
-
-<===>
-================================================================================
-<===> strategy/up/negative_step/input.scss
-a {b: round(up, 12px, -7px)}
-
-<===> strategy/up/negative_step/output.css
-a {
-  b: 14px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/step_is_zero/input.scss
-a {b: round(up, 10px, 0px)}
-
-<===> strategy/up/step_is_zero/output.css
-a {
-  b: calc(NaN * 1px);
-}
-
-<===>
-================================================================================
-<===> strategy/up/positive_and_infinity/input.scss
-a {b: round(up, 10, infinity)}
-
-<===> strategy/up/positive_and_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/up/negative_and_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(up, -10, infinity))}
-
-<===> strategy/up/negative_and_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/up/infinity/input.scss
-@use "sass:math";
-a {b: round(up, infinity, infinity)}
-
-<===> strategy/up/infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> strategy/up/upper_multiple/number_is_bigger/input.scss
-a {b: round(up, 23px, 10px)}
-
-<===> strategy/up/upper_multiple/number_is_bigger/output.css
-a {
-  b: 30px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/upper_multiple/number_is_smaller/input.scss
-a {b: round(up, 18px, 10px)}
-
-<===> strategy/up/upper_multiple/number_is_smaller/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/upper_multiple/number_is_half/input.scss
-a {b: round(up, 15px, 10px)}
-
-<===> strategy/up/upper_multiple/number_is_half/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/upper_multiple/number_is_negative/input.scss
-a {b: round(up, -13px, 10px)}
-
-<===> strategy/up/upper_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/lower_multiple/number_is_bigger/input.scss
-a {b: round(up, 13px, 10px)}
-
-<===> strategy/up/lower_multiple/number_is_bigger/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/lower_multiple/number_is_negative/input.scss
-a {b: round(up, -18px, 10px)}
-
-<===> strategy/up/lower_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> strategy/up/negative_zero/positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(up, -1 * 0, infinity))}
-
-<===> strategy/up/negative_zero/positive_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/up/positive_zero/zero/input.scss
-@use "sass:math";
-a {b: math.div(1, round(up, 0, infinity))}
-
-<===> strategy/up/positive_zero/zero/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> strategy/up/positive_zero/one/input.scss
-a {b: round(up, 1, infinity)}
-
-<===> strategy/up/positive_zero/one/output.css
-a {
-  b: calc(infinity);
-}
diff --git a/spec/values/calculation/round/three_arguments.hrx b/spec/values/calculation/round/three_arguments.hrx
deleted file mode 100644
index 45579e68e..000000000
--- a/spec/values/calculation/round/three_arguments.hrx
+++ /dev/null
@@ -1,59 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> strategy/unknown_variable/input.scss
-a {
-  e: round(var(--c), 8px, 9px);
-}
-<===> strategy/unknown_variable/output.css
-a {
-  e: round(var(--c), 8px, 9px);
-}
-
-<===>
-================================================================================
-<===> step/unknown_variable/input.scss
-a {
-  d: round(up, 8px, var(--c));
-}
-<===> step/unknown_variable/output.css
-a {
-  d: round(up, 8px, var(--c));
-}
-
-<===>
-================================================================================
-<===> preserved/interpolation/input.scss
-a {
-  e: round(#{"up"}, 3px, 9px);
-}
-
-<===> preserved/interpolation/output.css
-a {
-  e: round(up, 3px, 9px);
-}
-
-<===>
-================================================================================
-<===> units/real_and_unknown/input.scss
-a {b: round(nearest, 1px, 10%)}
-
-<===> units/real_and_unknown/output.css
-a {
-  b: round(nearest, 1px, 10%);
-}
-
-<===>
-================================================================================
-<===> units/unknown/input.scss
-a {
-  b: round(nearest, 1%, 2%);
-}
-
-<===> units/unknown/output.css
-a {
-  b: 2%;
-}
diff --git a/spec/values/calculation/round/two_arguments.hrx b/spec/values/calculation/round/two_arguments.hrx
deleted file mode 100644
index 3971116e8..000000000
--- a/spec/values/calculation/round/two_arguments.hrx
+++ /dev/null
@@ -1,321 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `round()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> units/none/input.scss
-a {b: round(117, 25)}
-
-<===> units/none/output.css
-a {
-  b: 125;
-}
-
-<===>
-================================================================================
-<===> units/compatible/input.scss
-a {b: round(117cm, 25mm)}
-
-<===> units/compatible/output.css
-a {
-  b: 117.5cm;
-}
-
-<===>
-================================================================================
-<===> units/real_and_unknown/input.scss
-a {b: round(1px, 10%)}
-
-<===> units/real_and_unknown/output.css
-a {
-  b: round(1px, 10%);
-}
-
-<===>
-================================================================================
-<===> units/unknown/input.scss
-a {
-  b: round(1%, 2%);
-}
-
-<===> units/unknown/output.css
-a {
-  b: 2%;
-}
-
-<===>
-================================================================================
-<===> units/fake/input.scss
-a {
-  b: round(1foo, 2bar);
-}
-
-<===> units/fake/output.css
-a {
-  b: round(1foo, 2bar);
-}
-
-<===>
-================================================================================
-<===> units/same_fake/input.scss
-a {
-  b: round(1foo, 2foo);
-}
-
-<===> units/same_fake/output.css
-a {
-  b: 2foo;
-}
-
-<===>
-================================================================================
-<===> units/real_and_fake/input.scss
-a {
-  b: round(1px, 2bar);
-}
-
-<===> units/real_and_fake/output.css
-a {
-  b: round(1px, 2bar);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {b: round(3.4px + 10%, 1px + 4px)}
-
-<===> simplification/output.css
-a {
-  b: round(3.4px + 10%, 5px);
-}
-
-<===>
-================================================================================
-<===> step_is_zero/input.scss
-a {b: round(5px, 0px)}
-
-<===> step_is_zero/output.css
-a {
-  b: calc(NaN * 1px);
-}
-
-<===>
-================================================================================
-<===> equals/input.scss
-a {b: round(10px, 10px)}
-
-<===> equals/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> nan/input.scss
-a {b: round(NaN, NaN)}
-
-<===> nan/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> unknown_variable/input.scss
-a {
-  c: round(up, var(--c));
-}
-
-<===> unknown_variable/output.css
-a {
-  c: round(up, var(--c));
-}
-
-<===>
-================================================================================
-<===> preserved/interpolation/input.scss
-a {
-  e: round(#{"5.5px, 1px"});
-}
-
-<===> preserved/interpolation/output.css
-a {
-  e: round(5.5px, 1px);
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_bigger/input.scss
-a {b: round(23px, 10px)}
-
-<===> upper_multiple/number_is_bigger/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_smaller/input.scss
-a {b: round(18px, 10px)}
-
-<===> upper_multiple/number_is_smaller/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_half/input.scss
-a {b: round(15px, 10px)}
-
-<===> upper_multiple/number_is_half/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> upper_multiple/number_is_negative/input.scss
-a {b: round(-13px, 10px)}
-
-<===> upper_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> lower_multiple/number_is_bigger/input.scss
-a {b: round(13px, 10px)}
-
-<===> lower_multiple/number_is_bigger/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> lower_multiple/number_is_negative/input.scss
-a {b: round(-18px, 10px)}
-
-<===> lower_multiple/number_is_negative/output.css
-a {
-  b: -20px;
-}
-
-<===>
-================================================================================
-<===> negative_zero/positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(-5, infinity))}
-
-<===> negative_zero/positive_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> negative_zero/negative_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(-5, -infinity))}
-
-<===> negative_zero/negative_infinity/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> positive_zero/positive_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(5, infinity))}
-
-<===> positive_zero/positive_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> positive_zero/negative_infinity/input.scss
-@use "sass:math";
-a {b: math.div(1, round(5, -infinity))}
-
-<===> positive_zero/negative_infinity/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> negative_step/upper_multiple/number_is_bigger/input.scss
-a {b: round(23px, -10px)}
-
-<===> negative_step/upper_multiple/number_is_bigger/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> negative_step/upper_multiple/number_is_smaller/input.scss
-a {b: round(18px, -10px)}
-
-<===> negative_step/upper_multiple/number_is_smaller/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> negative_step/upper_multiple/number_is_half/input.scss
-a {b: round(15px, -10px)}
-
-<===> negative_step/upper_multiple/number_is_half/output.css
-a {
-  b: 20px;
-}
-
-<===>
-================================================================================
-<===> negative_step/upper_multiple/number_is_negative/input.scss
-a {b: round(-13px, -10px)}
-
-<===> negative_step/upper_multiple/number_is_negative/output.css
-a {
-  b: -10px;
-}
-
-<===>
-================================================================================
-<===> negative_step/lower_multiple/number_is_bigger/input.scss
-a {b: round(13px, -10px)}
-
-<===> negative_step/lower_multiple/number_is_bigger/output.css
-a {
-  b: 10px;
-}
-
-<===>
-================================================================================
-<===> negative_step/lower_multiple/number_is_negative/input.scss
-a {b: round(-18px, -10px)}
-
-<===> negative_step/lower_multiple/number_is_negative/output.css
-a {
-  b: -20px;
-}
-
-<===>
-================================================================================
-<===> math/unknown_units/input.scss
-a {
-  b: round(1px + 0%, 1px + 0%);
-}
-
-<===> math/unknown_units/output.css
-a {
-  b: round(1px + 0%, 1px + 0%);
-}
diff --git a/spec/values/calculation/sign.hrx b/spec/values/calculation/sign.hrx
deleted file mode 100644
index 8226107a2..000000000
--- a/spec/values/calculation/sign.hrx
+++ /dev/null
@@ -1,152 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `sign()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> positive/input.scss
-a {b: sign(3)}
-
-<===> positive/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: sign(-5.6)}
-
-<===> negative/output.css
-a {
-  b: -1;
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-@use "sass:math";
-a {b: math.div(1, sign(0))}
-
-<===> zero/output.css
-a {
-  b: calc(infinity);
-}
-
-<===>
-================================================================================
-<===> nan/input.scss
-a {b: sign(NaN)}
-
-<===> nan/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> negative_zero/input.scss
-@use "sass:math";
-a {b: math.div(1, sign(-0.0))}
-
-<===> negative_zero/output.css
-a {
-  b: calc(-infinity);
-}
-
-<===>
-================================================================================
-<===> zero_fuzzy/input.scss
-a {b: sign(0.000000000001)}
-
-<===> zero_fuzzy/output.css
-a {
-  b: 1;
-}
-
-<===>
-================================================================================
-<===> preserves_units/input.scss
-a {b: sign(-7px / 4em) * 1em}
-
-<===> preserves_units/output.css
-a {
-  b: -1px;
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: sign(1px + 2px - var(--c))
-}
-
-<===> simplification/output.css
-a {
-  b: sign(3px - var(--c));
-}
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: sign("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: sign("0")}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: sign()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: sign()}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: sign(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: sign(0, 0)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: sign($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: sign($)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: sign(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: sign(7 % 3)}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
diff --git a/spec/values/calculation/sin.hrx b/spec/values/calculation/sin.hrx
deleted file mode 100644
index 5be9f9933..000000000
--- a/spec/values/calculation/sin.hrx
+++ /dev/null
@@ -1,199 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `sin()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> deg/input.scss
-a {b: sin(1deg)}
-
-<===> deg/output.css
-a {
-  b: 0.0174524064;
-}
-
-<===>
-================================================================================
-<===> grad/input.scss
-a {b: sin(1grad)}
-
-<===> grad/output.css
-a {
-  b: 0.0157073173;
-}
-
-<===>
-================================================================================
-<===> rad/input.scss
-a {b: sin(1rad)}
-
-<===> rad/output.css
-a {
-  b: 0.8414709848;
-}
-
-<===>
-================================================================================
-<===> turn/input.scss
-a {b: sin(1turn)}
-
-<===> turn/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> negative_infinity/input.scss
-a {b: sin(-infinity)}
-
-<===> negative_infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> negative_one/input.scss
-a {b: sin(-1)}
-
-<===> negative_one/output.css
-a {
-  b: -0.8414709848;
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: sin(0)}
-
-<===> zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> infinity/input.scss
-a {b: sin(infinity)}
-
-<===> infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: sin(3px - 1px + var(--c));
-}
-
-<===> simplification/output.css
-a {
-  b: sin(2px + var(--c));
-}
-
-<===>
-================================================================================
-<===> error/units/unknown/input.scss
-a {b: sin(1%)}
-
-<===> error/units/unknown/error
-Error: $number: Expected 1% to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: sin(1%)}
-  |       ^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/known/input.scss
-a {b: sin(1px)}
-
-<===> error/units/known/error
-Error: $number: Expected 1px to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: sin(1px)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/complex/input.scss
-a {b: sin(-7px / 4em)}
-
-<===> error/units/complex/error
-Error: $number: Expected -1.75px/em to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: sin(-7px / 4em)}
-  |       ^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: sin("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: sin("0")}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: sin()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: sin()}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: sin(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: sin(0, 0)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: sin($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: sin($)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: sin(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: sin(7 % 3)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
diff --git a/spec/values/calculation/sqrt.hrx b/spec/values/calculation/sqrt.hrx
deleted file mode 100644
index aa920ed49..000000000
--- a/spec/values/calculation/sqrt.hrx
+++ /dev/null
@@ -1,136 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `sqrt()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: sqrt(0)}
-
-<===> zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> units/unitless/input.scss
-a {b: sqrt(2)}
-
-<===> units/unitless/output.css
-a {
-  b: 1.4142135624;
-}
-
-<===>
-================================================================================
-<===> negative/input.scss
-a {b: sqrt(-9)}
-
-<===> negative/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: sqrt(1px + 2px - var(--c))
-}
-
-<===> simplification/output.css
-a {
-  b: sqrt(3px - var(--c));
-}
-
-<===>
-================================================================================
-<===> error/units/unknown/input.scss
-a {b: sqrt(1%)}
-
-<===> error/units/unknown/error
-Error: Expected 1% to have no units.
-  ,
-1 | a {b: sqrt(1%)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/real/input.scss
-a {b: sqrt(16px)}
-
-<===> error/units/real/error
-Error: Expected 16px to have no units.
-  ,
-1 | a {b: sqrt(16px)}
-  |       ^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: sqrt("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: sqrt("0")}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/too_few_args/input.scss
-a {b: sqrt()}
-
-<===> error/syntax/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: sqrt()}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: sqrt($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: sqrt($)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: sqrt(3, 4)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: sqrt(3, 4)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: sqrt(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: sqrt(7 % 3)}
-  |              ^
-  '
-  input.scss 1:14  root stylesheet
diff --git a/spec/values/calculation/tan.hrx b/spec/values/calculation/tan.hrx
deleted file mode 100644
index ffd2ec314..000000000
--- a/spec/values/calculation/tan.hrx
+++ /dev/null
@@ -1,199 +0,0 @@
-<===> README.md
-Most of the same behavior tested for `calc()` applies to `tan()`, but for
-terseness' sake isn't tested explicitly.
-
-<===>
-================================================================================
-<===> deg/input.scss
-a {b: tan(1deg)}
-
-<===> deg/output.css
-a {
-  b: 0.0174550649;
-}
-
-<===>
-================================================================================
-<===> grad/input.scss
-a {b: tan(1grad)}
-
-<===> grad/output.css
-a {
-  b: 0.0157092553;
-}
-
-<===>
-================================================================================
-<===> rad/input.scss
-a {b: tan(1rad)}
-
-<===> rad/output.css
-a {
-  b: 1.5574077247;
-}
-
-<===>
-================================================================================
-<===> turn/input.scss
-a {b: tan(1turn)}
-
-<===> turn/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> negative_infinity/input.scss
-a {b: tan(-infinity)}
-
-<===> negative_infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> negative_one/input.scss
-a {b: tan(-1)}
-
-<===> negative_one/output.css
-a {
-  b: -1.5574077247;
-}
-
-<===>
-================================================================================
-<===> zero/input.scss
-a {b: tan(0)}
-
-<===> zero/output.css
-a {
-  b: 0;
-}
-
-<===>
-================================================================================
-<===> infinity/input.scss
-a {b: tan(infinity)}
-
-<===> infinity/output.css
-a {
-  b: calc(NaN);
-}
-
-<===>
-================================================================================
-<===> simplification/input.scss
-a {
-  b: tan(3px - 1px + var(--c));
-}
-
-<===> simplification/output.css
-a {
-  b: tan(2px + var(--c));
-}
-
-<===>
-================================================================================
-<===> error/units/unknown/input.scss
-a {b: tan(1%)}
-
-<===> error/units/unknown/error
-Error: $number: Expected 1% to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: tan(1%)}
-  |       ^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/known/input.scss
-a {b: tan(1px)}
-
-<===> error/units/known/error
-Error: $number: Expected 1px to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: tan(1px)}
-  |       ^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/units/complex/input.scss
-a {b: tan(-7px / 4em)}
-
-<===> error/units/complex/error
-Error: $number: Expected -1.75px/em to have an angle unit (deg, grad, rad, turn).
-  ,
-1 | a {b: tan(-7px / 4em)}
-  |       ^^^^^^^^^^^^^^^
-  '
-  input.scss 1:7  root stylesheet
-
-<===>
-================================================================================
-<===> error/type/input.scss
-a {b: tan("0")}
-
-<===> error/type/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: tan("0")}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_few_args/input.scss
-a {b: tan()}
-
-<===> error/too_few_args/error
-Error: Expected number, variable, function, or calculation.
-  ,
-1 | a {b: tan()}
-  |           ^
-  '
-  input.scss 1:11  root stylesheet
-
-<===>
-================================================================================
-<===> error/too_many_args/input.scss
-a {b: tan(0, 0)}
-
-<===> error/too_many_args/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: tan(0, 0)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/syntax/invalid_arg/input.scss
-a {b: tan($)}
-
-<===> error/syntax/invalid_arg/error
-Error: Expected identifier.
-  ,
-1 | a {b: tan($)}
-  |            ^
-  '
-  input.scss 1:12  root stylesheet
-
-<===>
-================================================================================
-<===> error/sass_script/input.scss
-a {b: tan(7 % 3)}
-
-<===> error/sass_script/error
-Error: expected "+", "-", "*", "/", or ")".
-  ,
-1 | a {b: tan(7 % 3)}
-  |             ^
-  '
-  input.scss 1:13  root stylesheet