diff --git a/libc/test/src/math/atanf_test.cpp b/libc/test/src/math/atanf_test.cpp
@@ -53,8 +53,15 @@ TEST_F(LlvmLibcAtanfTest, InFloatRange) {
 
 // For small values, tanh(x) is x.
 TEST_F(LlvmLibcAtanfTest, SpecialValues) {
-  uint32_t val_arr[] = {0x3d8d6b23U, 0x3feefcfbU, 0xbd8d6b23U,
-                        0xbfeefcfbU, 0x7F800000U, 0xFF800000U};
+  uint32_t val_arr[] = {
+      0x3d8d6b23U, // x = 0x1.1ad646p-4f
+      0x3feefcfbU, // x = 0x1.ddf9f6p+0f
+      0xbd8d6b23U, // x = -0x1.1ad646p-4f
+      0xbfeefcfbU, // x = -0x1.ddf9f6p+0f
+      0x7F800000U, // x = +Inf
+      0xFF800000U, // x = -Inf
+      0xbffe2ec1U, // x = -0x1.fc5d82p+0f
+  };
   for (uint32_t v : val_arr) {
     float x = FPBits(v).get_val();
     EXPECT_MPFR_MATCH_ALL_ROUNDING(mpfr::Operation::Atan, x,

diff --git a/libc/test/src/math/exhaustive/atanf_test.cpp b/libc/test/src/math/exhaustive/atanf_test.cpp
@@ -25,7 +25,7 @@ TEST_F(LlvmLibcAtanfExhaustiveTest, PostiveRange) {
 }
 
 // Range: [-Inf, 0];
-static constexpr uint32_t NEG_START = 0xb000'0000U;
+static constexpr uint32_t NEG_START = 0x8000'0000U;
 static constexpr uint32_t NEG_STOP = 0xff80'0000U;
 
 TEST_F(LlvmLibcAtanfExhaustiveTest, NegativeRange) {

diff --git a/libc/test/src/math/inv_trigf_utils_test.cpp b/libc/test/src/math/inv_trigf_utils_test.cpp
diff --git a/utils/bazel/llvm-project-overlay/libc/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/BUILD.bazel
@@ -1252,13 +1252,9 @@ libc_support_library(
     hdrs = ["src/math/generic/inv_trigf_utils.h"],
     deps = [
         ":__support_common",
-        ":__support_fputil_fenv_impl",
         ":__support_fputil_fma",
-        ":__support_fputil_fp_bits",
         ":__support_fputil_multiply_add",
-        ":__support_fputil_nearest_integer",
         ":__support_fputil_polyeval",
-        ":math_utils",
     ],
 )