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
22 namespace __math {
23
24 // log
25
log(float __x)26 inline _LIBCPP_HIDE_FROM_ABI float log(float __x) _NOEXCEPT { return __builtin_logf(__x); }
27
28 template <class = int>
log(double __x)29 _LIBCPP_HIDE_FROM_ABI double log(double __x) _NOEXCEPT {
30 return __builtin_log(__x);
31 }
32
log(long double __x)33 inline _LIBCPP_HIDE_FROM_ABI long double log(long double __x) _NOEXCEPT { return __builtin_logl(__x); }
34
35 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
log(_A1 __x)36 inline _LIBCPP_HIDE_FROM_ABI double log(_A1 __x) _NOEXCEPT {
37 return __builtin_log((double)__x);
38 }
39
40 // log10
41
log10(float __x)42 inline _LIBCPP_HIDE_FROM_ABI float log10(float __x) _NOEXCEPT { return __builtin_log10f(__x); }
43
44 template <class = int>
log10(double __x)45 _LIBCPP_HIDE_FROM_ABI double log10(double __x) _NOEXCEPT {
46 return __builtin_log10(__x);
47 }
48
log10(long double __x)49 inline _LIBCPP_HIDE_FROM_ABI long double log10(long double __x) _NOEXCEPT { return __builtin_log10l(__x); }
50
51 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
log10(_A1 __x)52 inline _LIBCPP_HIDE_FROM_ABI double log10(_A1 __x) _NOEXCEPT {
53 return __builtin_log10((double)__x);
54 }
55
56 // ilogb
57
ilogb(float __x)58 inline _LIBCPP_HIDE_FROM_ABI int ilogb(float __x) _NOEXCEPT { return __builtin_ilogbf(__x); }
59
60 template <class = int>
ilogb(double __x)61 _LIBCPP_HIDE_FROM_ABI double ilogb(double __x) _NOEXCEPT {
62 return __builtin_ilogb(__x);
63 }
64
ilogb(long double __x)65 inline _LIBCPP_HIDE_FROM_ABI int ilogb(long double __x) _NOEXCEPT { return __builtin_ilogbl(__x); }
66
67 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
ilogb(_A1 __x)68 inline _LIBCPP_HIDE_FROM_ABI int ilogb(_A1 __x) _NOEXCEPT {
69 return __builtin_ilogb((double)__x);
70 }
71
72 // log1p
73
log1p(float __x)74 inline _LIBCPP_HIDE_FROM_ABI float log1p(float __x) _NOEXCEPT { return __builtin_log1pf(__x); }
75
76 template <class = int>
log1p(double __x)77 _LIBCPP_HIDE_FROM_ABI double log1p(double __x) _NOEXCEPT {
78 return __builtin_log1p(__x);
79 }
80
log1p(long double __x)81 inline _LIBCPP_HIDE_FROM_ABI long double log1p(long double __x) _NOEXCEPT { return __builtin_log1pl(__x); }
82
83 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
log1p(_A1 __x)84 inline _LIBCPP_HIDE_FROM_ABI double log1p(_A1 __x) _NOEXCEPT {
85 return __builtin_log1p((double)__x);
86 }
87
88 // log2
89
log2(float __x)90 inline _LIBCPP_HIDE_FROM_ABI float log2(float __x) _NOEXCEPT { return __builtin_log2f(__x); }
91
92 template <class = int>
log2(double __x)93 _LIBCPP_HIDE_FROM_ABI double log2(double __x) _NOEXCEPT {
94 return __builtin_log2(__x);
95 }
96
log2(long double __x)97 inline _LIBCPP_HIDE_FROM_ABI long double log2(long double __x) _NOEXCEPT { return __builtin_log2l(__x); }
98
99 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
log2(_A1 __x)100 inline _LIBCPP_HIDE_FROM_ABI double log2(_A1 __x) _NOEXCEPT {
101 return __builtin_log2((double)__x);
102 }
103
104 // logb
105
logb(float __x)106 inline _LIBCPP_HIDE_FROM_ABI float logb(float __x) _NOEXCEPT { return __builtin_logbf(__x); }
107
108 template <class = int>
logb(double __x)109 _LIBCPP_HIDE_FROM_ABI double logb(double __x) _NOEXCEPT {
110 return __builtin_logb(__x);
111 }
112
logb(long double __x)113 inline _LIBCPP_HIDE_FROM_ABI long double logb(long double __x) _NOEXCEPT { return __builtin_logbl(__x); }
114
115 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
logb(_A1 __x)116 inline _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