diff options
Diffstat (limited to 'libc/include/llvm-libc-macros')
| -rw-r--r-- | libc/include/llvm-libc-macros/math-macros.h | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/libc/include/llvm-libc-macros/math-macros.h b/libc/include/llvm-libc-macros/math-macros.h index 6697ce5..e1b12e3 100644 --- a/libc/include/llvm-libc-macros/math-macros.h +++ b/libc/include/llvm-libc-macros/math-macros.h @@ -42,14 +42,37 @@ #define FP_LLOGBNAN LONG_MAX #endif -#if defined(__NVPTX__) || defined(__AMDGPU__) || defined(__FAST_MATH__) -#define math_errhandling 0 -#elif defined(__NO_MATH_ERRNO__) -#define math_errhandling (MATH_ERREXCEPT) +// Math error handling. Target support is assumed to be existent unless +// explicitly disabled. +#if defined(__NVPTX__) || defined(__AMDGPU__) || defined(__FAST_MATH__) || \ + defined(__NO_MATH_ERRNO__) +#define __LIBC_SUPPORTS_MATH_ERRNO 0 +#else +#define __LIBC_SUPPORTS_MATH_ERRNO 1 +#endif + +#if defined(__FAST_MATH__) || \ + ((defined(__arm__) || defined(_M_ARM) || defined(__thumb__) || \ + defined(__aarch64__) || defined(_M_ARM64)) && \ + !defined(__ARM_FP)) +#define __LIBC_SUPPORTS_MATH_ERREXCEPT 0 #else +#define __LIBC_SUPPORTS_MATH_ERREXCEPT 1 +#endif + +#if __LIBC_SUPPORTS_MATH_ERRNO && __LIBC_SUPPORTS_MATH_ERREXCEPT #define math_errhandling (MATH_ERRNO | MATH_ERREXCEPT) +#elif __LIBC_SUPPORTS_MATH_ERRNO +#define math_errhandling (MATH_ERRNO) +#elif __LIBC_SUPPORTS_MATH_ERREXCEPT +#define math_errhandling (MATH_ERREXCEPT) +#else +#define math_errhandling 0 #endif +#undef __LIBC_SUPPORTS_MATH_ERRNO +#undef __LIBC_SUPPORTS_MATH_ERREXCEPT + // POSIX math constants // https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/math.h.html #define M_E (__extension__ 0x1.5bf0a8b145769p1) |