1*5f757f3fSDimitry Andric //===----------------------------------------------------------------------===// 2*5f757f3fSDimitry Andric // 3*5f757f3fSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*5f757f3fSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*5f757f3fSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*5f757f3fSDimitry Andric // 7*5f757f3fSDimitry Andric //===----------------------------------------------------------------------===// 8*5f757f3fSDimitry Andric 9*5f757f3fSDimitry Andric #ifndef _LIBCPP___MATH_GAMMA_H 10*5f757f3fSDimitry Andric #define _LIBCPP___MATH_GAMMA_H 11*5f757f3fSDimitry Andric 12*5f757f3fSDimitry Andric #include <__config> 13*5f757f3fSDimitry Andric #include <__type_traits/enable_if.h> 14*5f757f3fSDimitry Andric #include <__type_traits/is_integral.h> 15*5f757f3fSDimitry Andric 16*5f757f3fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17*5f757f3fSDimitry Andric # pragma GCC system_header 18*5f757f3fSDimitry Andric #endif 19*5f757f3fSDimitry Andric 20*5f757f3fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21*5f757f3fSDimitry Andric 22*5f757f3fSDimitry Andric namespace __math { 23*5f757f3fSDimitry Andric 24*5f757f3fSDimitry Andric // lgamma 25*5f757f3fSDimitry Andric lgamma(float __x)26*5f757f3fSDimitry Andricinline _LIBCPP_HIDE_FROM_ABI float lgamma(float __x) _NOEXCEPT { return __builtin_lgammaf(__x); } 27*5f757f3fSDimitry Andric 28*5f757f3fSDimitry Andric template <class = int> lgamma(double __x)29*5f757f3fSDimitry Andric_LIBCPP_HIDE_FROM_ABI double lgamma(double __x) _NOEXCEPT { 30*5f757f3fSDimitry Andric return __builtin_lgamma(__x); 31*5f757f3fSDimitry Andric } 32*5f757f3fSDimitry Andric lgamma(long double __x)33*5f757f3fSDimitry Andricinline _LIBCPP_HIDE_FROM_ABI long double lgamma(long double __x) _NOEXCEPT { return __builtin_lgammal(__x); } 34*5f757f3fSDimitry Andric 35*5f757f3fSDimitry Andric template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> lgamma(_A1 __x)36*5f757f3fSDimitry Andricinline _LIBCPP_HIDE_FROM_ABI double lgamma(_A1 __x) _NOEXCEPT { 37*5f757f3fSDimitry Andric return __builtin_lgamma((double)__x); 38*5f757f3fSDimitry Andric } 39*5f757f3fSDimitry Andric 40*5f757f3fSDimitry Andric // nan 41*5f757f3fSDimitry Andric 42*5f757f3fSDimitry Andric // tgamma 43*5f757f3fSDimitry Andric tgamma(float __x)44*5f757f3fSDimitry Andricinline _LIBCPP_HIDE_FROM_ABI float tgamma(float __x) _NOEXCEPT { return __builtin_tgammaf(__x); } 45*5f757f3fSDimitry Andric 46*5f757f3fSDimitry Andric template <class = int> tgamma(double __x)47*5f757f3fSDimitry Andric_LIBCPP_HIDE_FROM_ABI double tgamma(double __x) _NOEXCEPT { 48*5f757f3fSDimitry Andric return __builtin_tgamma(__x); 49*5f757f3fSDimitry Andric } 50*5f757f3fSDimitry Andric tgamma(long double __x)51*5f757f3fSDimitry Andricinline _LIBCPP_HIDE_FROM_ABI long double tgamma(long double __x) _NOEXCEPT { return __builtin_tgammal(__x); } 52*5f757f3fSDimitry Andric 53*5f757f3fSDimitry Andric template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> tgamma(_A1 __x)54*5f757f3fSDimitry Andricinline _LIBCPP_HIDE_FROM_ABI double tgamma(_A1 __x) _NOEXCEPT { 55*5f757f3fSDimitry Andric return __builtin_tgamma((double)__x); 56*5f757f3fSDimitry Andric } 57*5f757f3fSDimitry Andric 58*5f757f3fSDimitry Andric } // namespace __math 59*5f757f3fSDimitry Andric 60*5f757f3fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 61*5f757f3fSDimitry Andric 62*5f757f3fSDimitry Andric #endif // _LIBCPP___MATH_GAMMA_H 63