1//===----------------------------------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef _LIBCPP___MATH_LOGARITHMS_H 10#define _LIBCPP___MATH_LOGARITHMS_H 11 12#include <__config> 13#include <__type_traits/enable_if.h> 14#include <__type_traits/is_integral.h> 15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# pragma GCC system_header 18#endif 19 20_LIBCPP_BEGIN_NAMESPACE_STD 21 22namespace __math { 23 24// log 25 26inline _LIBCPP_HIDE_FROM_ABI float log(float __x) _NOEXCEPT { return __builtin_logf(__x); } 27 28template <class = int> 29_LIBCPP_HIDE_FROM_ABI double log(double __x) _NOEXCEPT { 30 return __builtin_log(__x); 31} 32 33inline _LIBCPP_HIDE_FROM_ABI long double log(long double __x) _NOEXCEPT { return __builtin_logl(__x); } 34 35template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 36inline _LIBCPP_HIDE_FROM_ABI double log(_A1 __x) _NOEXCEPT { 37 return __builtin_log((double)__x); 38} 39 40// log10 41 42inline _LIBCPP_HIDE_FROM_ABI float log10(float __x) _NOEXCEPT { return __builtin_log10f(__x); } 43 44template <class = int> 45_LIBCPP_HIDE_FROM_ABI double log10(double __x) _NOEXCEPT { 46 return __builtin_log10(__x); 47} 48 49inline _LIBCPP_HIDE_FROM_ABI long double log10(long double __x) _NOEXCEPT { return __builtin_log10l(__x); } 50 51template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 52inline _LIBCPP_HIDE_FROM_ABI double log10(_A1 __x) _NOEXCEPT { 53 return __builtin_log10((double)__x); 54} 55 56// ilogb 57 58inline _LIBCPP_HIDE_FROM_ABI int ilogb(float __x) _NOEXCEPT { return __builtin_ilogbf(__x); } 59 60template <class = int> 61_LIBCPP_HIDE_FROM_ABI double ilogb(double __x) _NOEXCEPT { 62 return __builtin_ilogb(__x); 63} 64 65inline _LIBCPP_HIDE_FROM_ABI int ilogb(long double __x) _NOEXCEPT { return __builtin_ilogbl(__x); } 66 67template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 68inline _LIBCPP_HIDE_FROM_ABI int ilogb(_A1 __x) _NOEXCEPT { 69 return __builtin_ilogb((double)__x); 70} 71 72// log1p 73 74inline _LIBCPP_HIDE_FROM_ABI float log1p(float __x) _NOEXCEPT { return __builtin_log1pf(__x); } 75 76template <class = int> 77_LIBCPP_HIDE_FROM_ABI double log1p(double __x) _NOEXCEPT { 78 return __builtin_log1p(__x); 79} 80 81inline _LIBCPP_HIDE_FROM_ABI long double log1p(long double __x) _NOEXCEPT { return __builtin_log1pl(__x); } 82 83template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 84inline _LIBCPP_HIDE_FROM_ABI double log1p(_A1 __x) _NOEXCEPT { 85 return __builtin_log1p((double)__x); 86} 87 88// log2 89 90inline _LIBCPP_HIDE_FROM_ABI float log2(float __x) _NOEXCEPT { return __builtin_log2f(__x); } 91 92template <class = int> 93_LIBCPP_HIDE_FROM_ABI double log2(double __x) _NOEXCEPT { 94 return __builtin_log2(__x); 95} 96 97inline _LIBCPP_HIDE_FROM_ABI long double log2(long double __x) _NOEXCEPT { return __builtin_log2l(__x); } 98 99template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 100inline _LIBCPP_HIDE_FROM_ABI double log2(_A1 __x) _NOEXCEPT { 101 return __builtin_log2((double)__x); 102} 103 104// logb 105 106inline _LIBCPP_HIDE_FROM_ABI float logb(float __x) _NOEXCEPT { return __builtin_logbf(__x); } 107 108template <class = int> 109_LIBCPP_HIDE_FROM_ABI double logb(double __x) _NOEXCEPT { 110 return __builtin_logb(__x); 111} 112 113inline _LIBCPP_HIDE_FROM_ABI long double logb(long double __x) _NOEXCEPT { return __builtin_logbl(__x); } 114 115template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 116inline _LIBCPP_HIDE_FROM_ABI double logb(_A1 __x) _NOEXCEPT { 117 return __builtin_logb((double)__x); 118} 119 120} // namespace __math 121 122_LIBCPP_END_NAMESPACE_STD 123 124#endif // _LIBCPP___MATH_LOGARITHMS_H 125