fixup! [libc][math][c23] Add exp10m1f C23 math function

Undo changes to exp2m1f build and tests.

Author: overmighty

libc/test/src/math/CMakeLists.txt

@@ -643,7 +643,6 @@ add_fp_unittest(
   SRCS
     exp2m1f_test.cpp
   DEPENDS
-    libc.hdr.math_macros
     libc.src.errno.errno
     libc.src.math.exp2m1f
     libc.src.__support.CPP.array

libc/test/src/math/exp2m1f_test.cpp

@@ -8,6 +8,7 @@
 
 #include "hdr/math_macros.h"
 #include "src/__support/CPP/array.h"
+#include "src/__support/FPUtil/FPBits.h"
 #include "src/errno/libc_errno.h"
 #include "src/math/exp2m1f.h"
 #include "test/UnitTest/FPMatcher.h"
@@ -23,17 +24,17 @@ namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
 TEST_F(LlvmLibcExp2m1fTest, TrickyInputs) {
   constexpr LIBC_NAMESPACE::cpp::array<float, 10> INPUTS = {
       // EXP2M1F_EXCEPTS_LO
-      0x1.36dc8ep-36f,
-      0x1.224936p-19f,
-      0x1.d16d2p-20f,
-      0x1.17949ep-14f,
-      -0x1.9c3e1ep-38f,
-      -0x1.4d89b4p-32f,
-      -0x1.a6eac4p-10f,
-      -0x1.e7526ep-6f,
+      0x1.36dc8ep-36,
+      0x1.224936p-19,
+      0x1.d16d2p-20,
+      0x1.17949ep-14,
+      -0x1.9c3e1ep-38,
+      -0x1.4d89b4p-32,
+      -0x1.a6eac4p-10,
+      -0x1.e7526ep-6,
       // EXP2M1F_EXCEPTS_HI
-      0x1.16a972p-1f,
-      -0x1.9f12acp-5f,
+      0x1.16a972p-1,
+      -0x1.9f12acp-5,
   };
 
   for (float x : INPUTS) {

libc/test/src/math/smoke/exp2m1f_test.cpp

@@ -12,6 +12,8 @@
 #include "test/UnitTest/Test.h"
 
 using LlvmLibcExp2m1fTest = LIBC_NAMESPACE::testing::FPTest<float>;
+using LIBC_NAMESPACE::fputil::testing::ForceRoundingMode;
+using LIBC_NAMESPACE::fputil::testing::RoundingMode;
 
 TEST_F(LlvmLibcExp2m1fTest, SpecialNumbers) {
   LIBC_NAMESPACE::libc_errno = 0;
@@ -31,31 +33,31 @@ TEST_F(LlvmLibcExp2m1fTest, SpecialNumbers) {
 TEST_F(LlvmLibcExp2m1fTest, Overflow) {
   LIBC_NAMESPACE::libc_errno = 0;
 
-  EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.fffffep+127f),
+  EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.fffffep+127),
                               FE_OVERFLOW);
   EXPECT_MATH_ERRNO(ERANGE);
 
   EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(128.0f),
                               FE_OVERFLOW);
   EXPECT_MATH_ERRNO(ERANGE);
 
-  EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.000002p+7f),
+  EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f(0x1.000002p+7),
                               FE_OVERFLOW);
   EXPECT_MATH_ERRNO(ERANGE);
 }
 
 TEST_F(LlvmLibcExp2m1fTest, Underflow) {
   LIBC_NAMESPACE::libc_errno = 0;
 
-  EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.fffffep+127f),
+  EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.fffffep+127),
                               FE_UNDERFLOW);
   EXPECT_MATH_ERRNO(ERANGE);
 
   EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-25.0f),
                               FE_UNDERFLOW);
   EXPECT_MATH_ERRNO(ERANGE);
 
-  EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.900002p+4f),
+  EXPECT_FP_EQ_WITH_EXCEPTION(-1.0f, LIBC_NAMESPACE::exp2m1f(-0x1.900002p4),
                               FE_UNDERFLOW);
   EXPECT_MATH_ERRNO(ERANGE);
 }