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_INVERSE_TRIGONOMETRIC_FUNCTIONS_H 10 #define _LIBCPP___MATH_INVERSE_TRIGONOMETRIC_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 // acos 28 29 inline _LIBCPP_HIDE_FROM_ABI float acos(float __x) _NOEXCEPT { return __builtin_acosf(__x); } 30 31 template <class = int> 32 _LIBCPP_HIDE_FROM_ABI double acos(double __x) _NOEXCEPT { 33 return __builtin_acos(__x); 34 } 35 36 inline _LIBCPP_HIDE_FROM_ABI long double acos(long double __x) _NOEXCEPT { return __builtin_acosl(__x); } 37 38 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 39 inline _LIBCPP_HIDE_FROM_ABI double acos(_A1 __x) _NOEXCEPT { 40 return __builtin_acos((double)__x); 41 } 42 43 // asin 44 45 inline _LIBCPP_HIDE_FROM_ABI float asin(float __x) _NOEXCEPT { return __builtin_asinf(__x); } 46 47 template <class = int> 48 _LIBCPP_HIDE_FROM_ABI double asin(double __x) _NOEXCEPT { 49 return __builtin_asin(__x); 50 } 51 52 inline _LIBCPP_HIDE_FROM_ABI long double asin(long double __x) _NOEXCEPT { return __builtin_asinl(__x); } 53 54 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 55 inline _LIBCPP_HIDE_FROM_ABI double asin(_A1 __x) _NOEXCEPT { 56 return __builtin_asin((double)__x); 57 } 58 59 // atan 60 61 inline _LIBCPP_HIDE_FROM_ABI float atan(float __x) _NOEXCEPT { return __builtin_atanf(__x); } 62 63 template <class = int> 64 _LIBCPP_HIDE_FROM_ABI double atan(double __x) _NOEXCEPT { 65 return __builtin_atan(__x); 66 } 67 68 inline _LIBCPP_HIDE_FROM_ABI long double atan(long double __x) _NOEXCEPT { return __builtin_atanl(__x); } 69 70 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0> 71 inline _LIBCPP_HIDE_FROM_ABI double atan(_A1 __x) _NOEXCEPT { 72 return __builtin_atan((double)__x); 73 } 74 75 // atan2 76 77 inline _LIBCPP_HIDE_FROM_ABI float atan2(float __y, float __x) _NOEXCEPT { return __builtin_atan2f(__y, __x); } 78 79 template <class = int> 80 _LIBCPP_HIDE_FROM_ABI double atan2(double __x, double __y) _NOEXCEPT { 81 return __builtin_atan2(__x, __y); 82 } 83 84 inline _LIBCPP_HIDE_FROM_ABI long double atan2(long double __y, long double __x) _NOEXCEPT { 85 return __builtin_atan2l(__y, __x); 86 } 87 88 template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0> 89 inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type atan2(_A1 __y, _A2 __x) _NOEXCEPT { 90 using __result_type = typename __promote<_A1, _A2>::type; 91 static_assert((!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value)), ""); 92 return __math::atan2((__result_type)__y, (__result_type)__x); 93 } 94 95 } // namespace __math 96 97 _LIBCPP_END_NAMESPACE_STD 98 99 #endif // _LIBCPP___MATH_INVERSE_TRIGONOMETRIC_FUNCTIONS_H 100