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libstdc++: Minor simd_math cleanups

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Signed-off-by: Matthias Kretz <m.kretz@gsi.de>

libstdc++-v3/ChangeLog:

	* include/experimental/bits/simd_math.h: Undefine internal
	macros after use.
	(frexp): Move #if to a more sensible position and reformat
	preceding code.
	(logb): Call _SimdImpl::_S_logb for fixed_size instead of
	duplicating the code here.
	(modf): Simplify condition.
This commit is contained in:
Matthias Kretz 2021-06-24 14:20:15 +01:00 committed by Jonathan Wakely
parent dd1c7792d6
commit 62a989ea66
1 changed files with 6 additions and 16 deletions
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22
libstdc++-v3/include/experimental/bits/simd_math.h
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@ -645,11 +645,8 @@ template <typename _Tp, typename _Abi>
return __r;
}
else if constexpr (__is_fixed_size_abi_v<_Abi>)
{
return {__private_init,
_Abi::_SimdImpl::_S_frexp(__data(__x), __data(*__exp))};
return {__private_init, _Abi::_SimdImpl::_S_frexp(__data(__x), __data(*__exp))};
#if _GLIBCXX_SIMD_X86INTRIN
}
else if constexpr (__have_avx512f)
{
constexpr size_t _Np = simd_size_v<_Tp, _Abi>;
@ -667,8 +664,8 @@ template <typename _Tp, typename _Abi>
_Abi::_CommonImpl::_S_blend(_SimdWrapper<bool, _Np>(
__isnonzero),
__v, __getmant_avx512(__v))};
#endif // _GLIBCXX_SIMD_X86INTRIN
}
#endif // _GLIBCXX_SIMD_X86INTRIN
else
{
// fallback implementation
@ -751,14 +748,7 @@ template <typename _Tp, typename _Abi>
if constexpr (_Np == 1)
return std::logb(__x[0]);
else if constexpr (__is_fixed_size_abi_v<_Abi>)
{
return {__private_init,
__data(__x)._M_apply_per_chunk([](auto __impl, auto __xx) {
using _V = typename decltype(__impl)::simd_type;
return __data(
std::experimental::logb(_V(__private_init, __xx)));
})};
}
return {__private_init, _Abi::_SimdImpl::_S_logb(__data(__x))};
#if _GLIBCXX_SIMD_X86INTRIN // {{{
else if constexpr (__have_avx512vl && __is_sse_ps<_Tp, _Np>())
return {__private_init,
@ -829,9 +819,7 @@ template <typename _Tp, typename _Abi>
enable_if_t<is_floating_point_v<_Tp>, simd<_Tp, _Abi>>
modf(const simd<_Tp, _Abi>& __x, simd<_Tp, _Abi>* __iptr)
{
if constexpr (__is_scalar_abi<_Abi>()
|| (__is_fixed_size_abi_v<
_Abi> && simd_size_v<_Tp, _Abi> == 1))
if constexpr (simd_size_v<_Tp, _Abi> == 1)
{
_Tp __tmp;
_Tp __r = std::modf(__x[0], &__tmp);
@ -1474,6 +1462,8 @@ template <typename _Tp, typename _Abi>
}
// }}}
#undef _GLIBCXX_SIMD_CVTING2
#undef _GLIBCXX_SIMD_CVTING3
#undef _GLIBCXX_SIMD_MATH_CALL_
#undef _GLIBCXX_SIMD_MATH_CALL2_
#undef _GLIBCXX_SIMD_MATH_CALL3_