v1/__math/roots.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___MATH_ROOTS_H
0010 #define _LIBCPP___MATH_ROOTS_H
0011
0012 #include <__config>
0013 #include <__type_traits/enable_if.h>
0014 #include <__type_traits/is_integral.h>
0015
0016 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0017 #  pragma GCC system_header
0018 #endif
0019
0020 _LIBCPP_BEGIN_NAMESPACE_STD
0021
0022 namespace __math {
0023
0024 // sqrt
0025
0026 inline _LIBCPP_HIDE_FROM_ABI float sqrt(float __x) _NOEXCEPT { return __builtin_sqrtf(__x); }
0027
0028 template <class = int>
0029 _LIBCPP_HIDE_FROM_ABI double sqrt(double __x) _NOEXCEPT {
0030   return __builtin_sqrt(__x);
0031 }
0032
0033 inline _LIBCPP_HIDE_FROM_ABI long double sqrt(long double __x) _NOEXCEPT { return __builtin_sqrtl(__x); }
0034
0035 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
0036 inline _LIBCPP_HIDE_FROM_ABI double sqrt(_A1 __x) _NOEXCEPT {
0037   return __builtin_sqrt((double)__x);
0038 }
0039
0040 // cbrt
0041
0042 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI float cbrt(float __x) _NOEXCEPT { return __builtin_cbrtf(__x); }
0043
0044 template <class = int>
0045 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI double cbrt(double __x) _NOEXCEPT {
0046   return __builtin_cbrt(__x);
0047 }
0048
0049 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI long double cbrt(long double __x) _NOEXCEPT {
0050   return __builtin_cbrtl(__x);
0051 }
0052
0053 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
0054 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI double cbrt(_A1 __x) _NOEXCEPT {
0055   return __builtin_cbrt((double)__x);
0056 }
0057
0058 } // namespace __math
0059
0060 _LIBCPP_END_NAMESPACE_STD
0061
0062 #endif // _LIBCPP___MATH_ROOTS_H