diff options
| author | Matthias Kretz <m.kretz@gsi.de> | 2022-01-17 10:38:29 +0100 |
|---|---|---|
| committer | Matthias Kretz <m.kretz@gsi.de> | 2022-01-17 11:27:32 +0100 |
| commit | 84eb13b9d6a9979825f5deaa1c17762bf8c8ef9f (patch) | |
| tree | 2b8b7000339e29131bac36e49a32b4415a657d84 /libstdc++-v3/include/experimental | |
| parent | 57cfcb3eb280421d7e2c97fca3ab372e50d19545 (diff) | |
libstdc++: Don't fail if math_errhandling is not defined
Older glibc does not define math_errhandling with -ffast-math, in which
case floating-point exceptions are not used.
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
* include/experimental/bits/simd.h (__floating_point_flags): Do
not rely on the presence of the math_errhandling macro.
Diffstat (limited to 'libstdc++-v3/include/experimental')
| -rw-r--r-- | libstdc++-v3/include/experimental/bits/simd.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/libstdc++-v3/include/experimental/bits/simd.h b/libstdc++-v3/include/experimental/bits/simd.h index d837d0efb21..c991e3f223e 100644 --- a/libstdc++-v3/include/experimental/bits/simd.h +++ b/libstdc++-v3/include/experimental/bits/simd.h @@ -283,11 +283,20 @@ constexpr inline bool __have_power_vmx = __have_power_vsx; namespace __detail { + constexpr bool __handle_fpexcept = +#ifdef math_errhandling + math_errhandling & MATH_ERREXCEPT; +#elif defined __FAST_MATH__ + false; +#else + true; +#endif + constexpr std::uint_least64_t __floating_point_flags() { std::uint_least64_t __flags = 0; - if constexpr (math_errhandling & MATH_ERREXCEPT) + if constexpr (__handle_fpexcept) __flags |= 1; #ifdef __FAST_MATH__ __flags |= 1 << 1; |