| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___MATH_GAMMA_H |
| #define _LIBCPP___MATH_GAMMA_H |
| |
| #include <__config> |
| #include <__type_traits/enable_if.h> |
| #include <__type_traits/is_integral.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| namespace __math { |
| |
| // lgamma |
| |
| inline _LIBCPP_HIDE_FROM_ABI float lgamma(float __x) _NOEXCEPT { return __builtin_lgammaf(__x); } |
| |
| template <class = int> |
| _LIBCPP_HIDE_FROM_ABI double lgamma(double __x) _NOEXCEPT { |
| return __builtin_lgamma(__x); |
| } |
| |
| inline _LIBCPP_HIDE_FROM_ABI long double lgamma(long double __x) _NOEXCEPT { return __builtin_lgammal(__x); } |
| |
| template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> |
| inline _LIBCPP_HIDE_FROM_ABI double lgamma(_A1 __x) _NOEXCEPT { |
| return __builtin_lgamma((double)__x); |
| } |
| |
| // nan |
| |
| // tgamma |
| |
| inline _LIBCPP_HIDE_FROM_ABI float tgamma(float __x) _NOEXCEPT { return __builtin_tgammaf(__x); } |
| |
| template <class = int> |
| _LIBCPP_HIDE_FROM_ABI double tgamma(double __x) _NOEXCEPT { |
| return __builtin_tgamma(__x); |
| } |
| |
| inline _LIBCPP_HIDE_FROM_ABI long double tgamma(long double __x) _NOEXCEPT { return __builtin_tgammal(__x); } |
| |
| template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> |
| inline _LIBCPP_HIDE_FROM_ABI double tgamma(_A1 __x) _NOEXCEPT { |
| return __builtin_tgamma((double)__x); |
| } |
| |
| } // namespace __math |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___MATH_GAMMA_H |