v1/__math/error_functions.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___MATH_ERROR_FUNCTIONS_H
0010 #define _LIBCPP___MATH_ERROR_FUNCTIONS_H
0011
0012 #include <__config>
0013 #include <__type_traits/enable_if.h>
0014 #include <__type_traits/is_integral.h>
0015
0016 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0017 #  pragma GCC system_header
0018 #endif
0019
0020 _LIBCPP_BEGIN_NAMESPACE_STD
0021
0022 namespace __math {
0023
0024 // erf
0025
0026 inline _LIBCPP_HIDE_FROM_ABI float erf(float __x) _NOEXCEPT { return __builtin_erff(__x); }
0027
0028 template <class = int>
0029 _LIBCPP_HIDE_FROM_ABI double erf(double __x) _NOEXCEPT {
0030   return __builtin_erf(__x);
0031 }
0032
0033 inline _LIBCPP_HIDE_FROM_ABI long double erf(long double __x) _NOEXCEPT { return __builtin_erfl(__x); }
0034
0035 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
0036 inline _LIBCPP_HIDE_FROM_ABI double erf(_A1 __x) _NOEXCEPT {
0037   return __builtin_erf((double)__x);
0038 }
0039
0040 // erfc
0041
0042 inline _LIBCPP_HIDE_FROM_ABI float erfc(float __x) _NOEXCEPT { return __builtin_erfcf(__x); }
0043
0044 template <class = int>
0045 _LIBCPP_HIDE_FROM_ABI double erfc(double __x) _NOEXCEPT {
0046   return __builtin_erfc(__x);
0047 }
0048
0049 inline _LIBCPP_HIDE_FROM_ABI long double erfc(long double __x) _NOEXCEPT { return __builtin_erfcl(__x); }
0050
0051 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
0052 inline _LIBCPP_HIDE_FROM_ABI double erfc(_A1 __x) _NOEXCEPT {
0053   return __builtin_erfc((double)__x);
0054 }
0055
0056 } // namespace __math
0057
0058 _LIBCPP_END_NAMESPACE_STD
0059
0060 #endif // _LIBCPP___MATH_ERROR_FUNCTIONS_H