[libc-commits] [libc] [llvm] [libc][math][c23] implement C23 `acospif` math function (PR #183661)

Thu Feb 26 17:54:48 PST 2026

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results

The build failed before running any tests. Click on a failure below to see the details.

<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -mavx2 -mfma -D__LIBC_MISC_MATH_BASIC_OPS_OPT -D__LIBC_USE_BUILTIN_FMAX_FMIN -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -mavx2 -mfma -msse4.2 -D__LIBC_MISC_MATH_BASIC_OPS_OPT -D__LIBC_USE_BUILTIN_FMAX_FMIN -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -mavx2 -mfma -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -D__LIBC_MISC_MATH_BASIC_OPS_OPT -D__LIBC_USE_BUILTIN_FMAX_FMIN -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -mavx2 -mfma -msse4.2 -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -msse4.2 -D__LIBC_MISC_MATH_BASIC_OPS_OPT -D__LIBC_USE_BUILTIN_FMAX_FMIN -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__NO_ROUND_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>
<details>
<summary>libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o</summary>

```
FAILED: libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang++ --target=x86_64-unknown-linux-gnu -DLIBC_NAMESPACE=__llvm_libc_23_0_0_git -I/home/gha/actions-runner/_work/llvm-project/llvm-project/libc -I/home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc -isystem /home/gha/actions-runner/_work/llvm-project/llvm-project/build/runtimes/runtimes-bins/libc/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wno-pass-failed -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Xclang -fno-pch-timestamp -O3 -DNDEBUG -std=gnu++17 -UNDEBUG -msse4.2 -DLIBC_QSORT_IMPL=LIBC_QSORT_QUICK_SORT -DLIBC_COPT_STRING_LENGTH_IMPL=clang_vector -DLIBC_COPT_FIND_FIRST_CHARACTER_IMPL=word -DLIBC_ADD_NULL_CHECKS -DLIBC_ERRNO_MODE=LIBC_ERRNO_MODE_DEFAULT -DLIBC_THREAD_MODE=LIBC_THREAD_MODE_PLATFORM -DLIBC_CONF_WCTYPE_MODE=LIBC_WCTYPE_MODE_ASCII -DLIBC_COPT_RAW_MUTEX_DEFAULT_SPIN_COUNT=100 -fpie -ffixed-point -Wall -Wextra -Wconversion -Wno-sign-conversion -Wimplicit-fallthrough -Wwrite-strings -Wno-c99-extensions -Wno-gnu-imaginary-constant -Wno-pedantic -Wstrict-prototypes -Wextra-semi -Wnewline-eof -Wnonportable-system-include-path -Wthread-safety -DLIBC_TEST=UNIT -MD -MT libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o -MF libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o.d -o libc/test/shared/CMakeFiles/libc.test.shared.shared_math_test.__unit__.__NO_FMA_OPT.__NO_MISC_MATH_BASIC_OPS_OPT.__build__.dir/shared_math_test.cpp.o -c /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:150:49: error: no member named 'acospif' in namespace '__llvm_libc_23_0_0_git::shared'; did you mean 'cospif'?
150 | EXPECT_FP_EQ(0x0p+0f, LIBC_NAMESPACE::shared::acospif(1.0f));
| ^~~~~~~
| cospif
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/FPMatcher.h:272:15: note: expanded from macro 'EXPECT_FP_EQ'
272 | EXPECT_THAT(actual, LIBC_NAMESPACE::testing::getMatcher< \
| ^~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:514:29: note: expanded from macro 'EXPECT_THAT'
514 | LIBC_TEST_MATCH_(MATCHER, MATCH, #MATCHER, #MATCH, )
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:509:51: note: expanded from macro 'LIBC_TEST_MATCH_'
509 | LIBC_TEST_SCAFFOLDING_(matchAndExplain(MATCHER, MATCH, MATCHER_STR, \
| ^~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/UnitTest/LibcTest.h:428:7: note: expanded from macro 'LIBC_TEST_SCAFFOLDING_'
428 | if (TEST) \
| ^~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/cospif.h:18:13: note: 'cospif' declared here
18 | using math::cospif;
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, __llvm_libc_23_0_0_git::fputil::BFloat16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardbf16.h:22:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<__llvm_libc_23_0_0_git::fputil::BFloat16, long double, 0>' requested here
22 | return fputil::nextafter(x, y);
| ^
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/test/shared/shared_math_test.cpp:9:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math.h:14:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/shared/math/acos.h:13:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/acos.h:18:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/sqrt.h:15:
In file included from /home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/generic/sqrt.h:17:
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/cast.h:55:18: error: shift count is negative [-Werror,-Wshift-count-negative]
55 | x_mant >>= InFPBits::FRACTION_LEN - OutFPBits::FRACTION_LEN;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/FPUtil/ManipulationFunctions.h:225:7: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::cast<long double, _Float16>' requested here
225 | if (cast(from) == to)
| ^
/home/gha/actions-runner/_work/llvm-project/llvm-project/libc/src/__support/math/nexttowardf16.h:26:18: note: in instantiation of function template specialization '__llvm_libc_23_0_0_git::fputil::nextafter<_Float16, long double, 0>' requested here
26 | return fputil::nextafter(x, y);
| ^
3 errors generated.
```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/183661