Implement CSS exponential functions.

Differential Revision: https://phabricator.services.mozilla.com/D170842

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1814469
gecko-commit: a429c31909d39d44ff22f391b991407abd4a0cbe
gecko-reviewers: emilio

css/css-values/hypot-pow-sqrt-computed.html

@@ -25,12 +25,18 @@
 test_math_used('calc(100px * sqrt(100))', '1000px');
 test_math_used('calc(1px * pow(2, sqrt(100))', '1024px');
 test_math_used('hypot(3px, 4px)', '5px');
+test_math_used('hypot(3e+9px, 4e+9px)', '5e+9px');
 test_math_used('calc(100px * hypot(3, 4))', '500px');
 test_math_used('hypot(-5px)', '5px');
 test_math_used('calc(1px * hypot(-5))', '5px');
 test_math_used('calc(1px * hypot(10000))','10000px');
 test_math_used('calc(2px * sqrt(100000000))','20000px');
-test_math_used('calc(3px * pow(200, 4))', '33554428px');
+test_math_used('calc(3px * pow(20, 4))', '480000px');
+test_math_used('calc(-2 * hypot(3px, 4px))', '-10px');
+test_math_used('hypot(0% + 3px, 0% + 4px)', '5px');
+test_math_used('hypot(0% + 772.333px)', 'calc(0% + 772.333px)');
+test_math_used('hypot(0% + 772.35px)', 'calc(0% + 772.35px)');
+test_math_used('hypot(0% + 600px, 0% + 800px)', '1000px');
 
 //Type checking hypot
 test_math_used('hypot(1px)', '1px');

css/css-values/hypot-pow-sqrt-serialize.html

@@ -29,15 +29,15 @@
     '1');
 
 test_serialization(
-    'calc(pow(1,1) + 1)',
-    'calc(2)',
-    '2');
+    'calc(pow(1,1) - 0.5)',
+    'calc(0.5)',
+    '0.5');
 test_serialization(
-    'calc(hypot(1) * 2)',
-    'calc(2)',
-    '2');
+    'calc(hypot(1) * 0.5)',
+    'calc(0.5)',
+    '0.5');
 test_serialization(
     'calc(sqrt(1) - 1)',
     'calc(0)',
     '0');
-</script>
+</script>