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| author | Jonathan Wakely <jwakely@redhat.com> | 2025-05-12 12:56:17 +0100 |
|---|---|---|
| committer | Jonathan Wakely <redi@gcc.gnu.org> | 2025-05-15 16:33:16 +0100 |
| commit | 270d23c5b201c8e000f60e05d17577498f409441 (patch) | |
| tree | 725a77a8156cd14392e472c60eb9e29e99ba86b1 /libstdc++-v3 | |
| parent | 6dbcbd96e90159e87a339b98192b7e6e5534b0d7 (diff) | |
| download | gcc-270d23c5b201c8e000f60e05d17577498f409441.zip gcc-270d23c5b201c8e000f60e05d17577498f409441.tar.gz gcc-270d23c5b201c8e000f60e05d17577498f409441.tar.bz2 | |
libstdc++: Micro-optimization in std::arg overload for scalars
Use __builtin_signbit directly instead of std::signbit.
libstdc++-v3/ChangeLog:
* include/std/complex (arg(T)): Use __builtin_signbit instead of
std::signbit.
Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com>
Diffstat (limited to 'libstdc++-v3')
| -rw-r--r-- | libstdc++-v3/include/std/complex | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libstdc++-v3/include/std/complex b/libstdc++-v3/include/std/complex index 67f37d4..d9d2d8a 100644 --- a/libstdc++-v3/include/std/complex +++ b/libstdc++-v3/include/std/complex @@ -2532,8 +2532,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { typedef typename __gnu_cxx::__promote<_Tp>::__type __type; #if (_GLIBCXX11_USE_C99_MATH && !_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC) - return std::signbit(__x) ? __type(3.1415926535897932384626433832795029L) - : __type(); + return __builtin_signbit(__type(__x)) + ? __type(3.1415926535897932384626433832795029L) : __type(); #else return std::arg(std::complex<__type>(__x)); #endif |