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