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_EXPONENTIAL_FUNCTIONS_H 10 #define _LIBCPP___MATH_EXPONENTIAL_FUNCTIONS_H 11 12 #include <__config> 13 #include <__type_traits/enable_if.h> 14 #include <__type_traits/is_arithmetic.h> 15 #include <__type_traits/is_integral.h> 16 #include <__type_traits/is_same.h> 17 #include <__type_traits/promote.h> 18 19 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20 # pragma GCC system_header 21 #endif 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 namespace __math { 26 27 // exp 28 29 inline _LIBCPP_HIDE_FROM_ABI float exp(float __x) _NOEXCEPT { return __builtin_expf(__x); } 30 31 template <class = int> 32 _LIBCPP_HIDE_FROM_ABI double exp(double __x) _NOEXCEPT { 33 return __builtin_exp(__x); 34 } 35 36 inline _LIBCPP_HIDE_FROM_ABI long double exp(long double __x) _NOEXCEPT { return __builtin_expl(__x); } 37 38 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 39 inline _LIBCPP_HIDE_FROM_ABI double exp(_A1 __x) _NOEXCEPT { 40 return __builtin_exp((double)__x); 41 } 42 43 // frexp 44 45 inline _LIBCPP_HIDE_FROM_ABI float frexp(float __x, int* __e) _NOEXCEPT { return __builtin_frexpf(__x, __e); } 46 47 template <class = int> 48 _LIBCPP_HIDE_FROM_ABI double frexp(double __x, int* __e) _NOEXCEPT { 49 return __builtin_frexp(__x, __e); 50 } 51 52 inline _LIBCPP_HIDE_FROM_ABI long double frexp(long double __x, int* __e) _NOEXCEPT { 53 return __builtin_frexpl(__x, __e); 54 } 55 56 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 57 inline _LIBCPP_HIDE_FROM_ABI double frexp(_A1 __x, int* __e) _NOEXCEPT { 58 return __builtin_frexp((double)__x, __e); 59 } 60 61 // ldexp 62 63 inline _LIBCPP_HIDE_FROM_ABI float ldexp(float __x, int __e) _NOEXCEPT { return __builtin_ldexpf(__x, __e); } 64 65 template <class = int> 66 _LIBCPP_HIDE_FROM_ABI double ldexp(double __x, int __e) _NOEXCEPT { 67 return __builtin_ldexp(__x, __e); 68 } 69 70 inline _LIBCPP_HIDE_FROM_ABI long double ldexp(long double __x, int __e) _NOEXCEPT { 71 return __builtin_ldexpl(__x, __e); 72 } 73 74 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 75 inline _LIBCPP_HIDE_FROM_ABI double ldexp(_A1 __x, int __e) _NOEXCEPT { 76 return __builtin_ldexp((double)__x, __e); 77 } 78 79 // exp2 80 81 inline _LIBCPP_HIDE_FROM_ABI float exp2(float __x) _NOEXCEPT { return __builtin_exp2f(__x); } 82 83 template <class = int> 84 _LIBCPP_HIDE_FROM_ABI double exp2(double __x) _NOEXCEPT { 85 return __builtin_exp2(__x); 86 } 87 88 inline _LIBCPP_HIDE_FROM_ABI long double exp2(long double __x) _NOEXCEPT { return __builtin_exp2l(__x); } 89 90 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 91 inline _LIBCPP_HIDE_FROM_ABI double exp2(_A1 __x) _NOEXCEPT { 92 return __builtin_exp2((double)__x); 93 } 94 95 // expm1 96 97 inline _LIBCPP_HIDE_FROM_ABI float expm1(float __x) _NOEXCEPT { return __builtin_expm1f(__x); } 98 99 template <class = int> 100 _LIBCPP_HIDE_FROM_ABI double expm1(double __x) _NOEXCEPT { 101 return __builtin_expm1(__x); 102 } 103 104 inline _LIBCPP_HIDE_FROM_ABI long double expm1(long double __x) _NOEXCEPT { return __builtin_expm1l(__x); } 105 106 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 107 inline _LIBCPP_HIDE_FROM_ABI double expm1(_A1 __x) _NOEXCEPT { 108 return __builtin_expm1((double)__x); 109 } 110 111 // scalbln 112 113 inline _LIBCPP_HIDE_FROM_ABI float scalbln(float __x, long __y) _NOEXCEPT { return __builtin_scalblnf(__x, __y); } 114 115 template <class = int> 116 _LIBCPP_HIDE_FROM_ABI double scalbln(double __x, long __y) _NOEXCEPT { 117 return __builtin_scalbln(__x, __y); 118 } 119 120 inline _LIBCPP_HIDE_FROM_ABI long double scalbln(long double __x, long __y) _NOEXCEPT { 121 return __builtin_scalblnl(__x, __y); 122 } 123 124 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 125 inline _LIBCPP_HIDE_FROM_ABI double scalbln(_A1 __x, long __y) _NOEXCEPT { 126 return __builtin_scalbln((double)__x, __y); 127 } 128 129 // scalbn 130 131 inline _LIBCPP_HIDE_FROM_ABI float scalbn(float __x, int __y) _NOEXCEPT { return __builtin_scalbnf(__x, __y); } 132 133 template <class = int> 134 _LIBCPP_HIDE_FROM_ABI double scalbn(double __x, int __y) _NOEXCEPT { 135 return __builtin_scalbn(__x, __y); 136 } 137 138 inline _LIBCPP_HIDE_FROM_ABI long double scalbn(long double __x, int __y) _NOEXCEPT { 139 return __builtin_scalbnl(__x, __y); 140 } 141 142 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 143 inline _LIBCPP_HIDE_FROM_ABI double scalbn(_A1 __x, int __y) _NOEXCEPT { 144 return __builtin_scalbn((double)__x, __y); 145 } 146 147 // pow 148 149 inline _LIBCPP_HIDE_FROM_ABI float pow(float __x, float __y) _NOEXCEPT { return __builtin_powf(__x, __y); } 150 151 template <class = int> 152 _LIBCPP_HIDE_FROM_ABI double pow(double __x, double __y) _NOEXCEPT { 153 return __builtin_pow(__x, __y); 154 } 155 156 inline _LIBCPP_HIDE_FROM_ABI long double pow(long double __x, long double __y) _NOEXCEPT { 157 return __builtin_powl(__x, __y); 158 } 159 160 template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0> 161 inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type pow(_A1 __x, _A2 __y) _NOEXCEPT { 162 using __result_type = typename __promote<_A1, _A2>::type; 163 static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), ""); 164 return __math::pow((__result_type)__x, (__result_type)__y); 165 } 166 167 } // namespace __math 168 169 _LIBCPP_END_NAMESPACE_STD 170 171 #endif // _LIBCPP___MATH_EXPONENTIAL_FUNCTIONS_H 172