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