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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/libcxx/include/__math/inverse_trigonometric_functions.h
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//===----------------------------------------------------------------------===//

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//

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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

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// See https://llvm.org/LICENSE.txt for license information.

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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

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//

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//===----------------------------------------------------------------------===//

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#ifndef _LIBCPP___MATH_INVERSE_TRIGONOMETRIC_FUNCTIONS_H

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#define _LIBCPP___MATH_INVERSE_TRIGONOMETRIC_FUNCTIONS_H

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#include <__config>

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#include <__type_traits/enable_if.h>

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#include <__type_traits/is_arithmetic.h>

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#include <__type_traits/is_integral.h>

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#include <__type_traits/is_same.h>

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#include <__type_traits/promote.h>

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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

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#  pragma GCC system_header

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#endif

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_LIBCPP_BEGIN_NAMESPACE_STD

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namespace __math {

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// acos

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inline _LIBCPP_HIDE_FROM_ABI float acos(float __x) _NOEXCEPT { return __builtin_acosf(__x); }

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template <class = int>

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_LIBCPP_HIDE_FROM_ABI double acos(double __x) _NOEXCEPT {

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  return __builtin_acos(__x);

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}

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inline _LIBCPP_HIDE_FROM_ABI long double acos(long double __x) _NOEXCEPT { return __builtin_acosl(__x); }

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template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>

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inline _LIBCPP_HIDE_FROM_ABI double acos(_A1 __x) _NOEXCEPT {

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  return __builtin_acos((double)__x);

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}

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// asin

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inline _LIBCPP_HIDE_FROM_ABI float asin(float __x) _NOEXCEPT { return __builtin_asinf(__x); }

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template <class = int>

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_LIBCPP_HIDE_FROM_ABI double asin(double __x) _NOEXCEPT {

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  return __builtin_asin(__x);

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}

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inline _LIBCPP_HIDE_FROM_ABI long double asin(long double __x) _NOEXCEPT { return __builtin_asinl(__x); }

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template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>

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inline _LIBCPP_HIDE_FROM_ABI double asin(_A1 __x) _NOEXCEPT {

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  return __builtin_asin((double)__x);

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}

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// atan

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inline _LIBCPP_HIDE_FROM_ABI float atan(float __x) _NOEXCEPT { return __builtin_atanf(__x); }

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template <class = int>

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_LIBCPP_HIDE_FROM_ABI double atan(double __x) _NOEXCEPT {

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  return __builtin_atan(__x);

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}

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inline _LIBCPP_HIDE_FROM_ABI long double atan(long double __x) _NOEXCEPT { return __builtin_atanl(__x); }

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template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>

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inline _LIBCPP_HIDE_FROM_ABI double atan(_A1 __x) _NOEXCEPT {

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  return __builtin_atan((double)__x);

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}

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// atan2

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inline _LIBCPP_HIDE_FROM_ABI float atan2(float __y, float __x) _NOEXCEPT { return __builtin_atan2f(__y, __x); }

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template <class = int>

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_LIBCPP_HIDE_FROM_ABI double atan2(double __x, double __y) _NOEXCEPT {

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  return __builtin_atan2(__x, __y);

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}

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inline _LIBCPP_HIDE_FROM_ABI long double atan2(long double __y, long double __x) _NOEXCEPT {

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  return __builtin_atan2l(__y, __x);

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}

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template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>

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inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type atan2(_A1 __y, _A2 __x) _NOEXCEPT {

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  using __result_type = typename __promote<_A1, _A2>::type;

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  static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");

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  return __math::atan2((__result_type)__y, (__result_type)__x);

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}

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} // namespace __math

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_LIBCPP_END_NAMESPACE_STD

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#endif // _LIBCPP___MATH_INVERSE_TRIGONOMETRIC_FUNCTIONS_H

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