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
25namespace __math {
26
27// acos
28
29inline _LIBCPP_HIDE_FROM_ABI float acos(float __x) _NOEXCEPT { return __builtin_acosf(__x); }
30
31template <class = int>
32_LIBCPP_HIDE_FROM_ABI double acos(double __x) _NOEXCEPT {
33 return __builtin_acos(__x);
34}
35
36inline _LIBCPP_HIDE_FROM_ABI long double acos(long double __x) _NOEXCEPT { return __builtin_acosl(__x); }
37
38template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
39inline _LIBCPP_HIDE_FROM_ABI double acos(_A1 __x) _NOEXCEPT {
40 return __builtin_acos((double)__x);
41}
42
43// asin
44
45inline _LIBCPP_HIDE_FROM_ABI float asin(float __x) _NOEXCEPT { return __builtin_asinf(__x); }
46
47template <class = int>
48_LIBCPP_HIDE_FROM_ABI double asin(double __x) _NOEXCEPT {
49 return __builtin_asin(__x);
50}
51
52inline _LIBCPP_HIDE_FROM_ABI long double asin(long double __x) _NOEXCEPT { return __builtin_asinl(__x); }
53
54template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
55inline _LIBCPP_HIDE_FROM_ABI double asin(_A1 __x) _NOEXCEPT {
56 return __builtin_asin((double)__x);
57}
58
59// atan
60
61inline _LIBCPP_HIDE_FROM_ABI float atan(float __x) _NOEXCEPT { return __builtin_atanf(__x); }
62
63template <class = int>
64_LIBCPP_HIDE_FROM_ABI double atan(double __x) _NOEXCEPT {
65 return __builtin_atan(__x);
66}
67
68inline _LIBCPP_HIDE_FROM_ABI long double atan(long double __x) _NOEXCEPT { return __builtin_atanl(__x); }
69
70template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
71inline _LIBCPP_HIDE_FROM_ABI double atan(_A1 __x) _NOEXCEPT {
72 return __builtin_atan((double)__x);
73}
74
75// atan2
76
77inline _LIBCPP_HIDE_FROM_ABI float atan2(float __y, float __x) _NOEXCEPT { return __builtin_atan2f(__y, __x); }
78
79template <class = int>
80_LIBCPP_HIDE_FROM_ABI double atan2(double __x, double __y) _NOEXCEPT {
81 return __builtin_atan2(__x, __y);
82}
83
84inline _LIBCPP_HIDE_FROM_ABI long double atan2(long double __y, long double __x) _NOEXCEPT {
85 return __builtin_atan2l(__y, __x);
86}
87
88template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
89inline _LIBCPP_HIDE_FROM_ABI __promote_t<_A1, _A2> atan2(_A1 __y, _A2 __x) _NOEXCEPT {
90 using __result_type = __promote_t<_A1, _A2>;
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