libcxx/include/__math/roots.h

   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_ROOTS_H
  10 #define _LIBCPP___MATH_ROOTS_H
  11
  12 #include <__config>
  13 #include <__type_traits/enable_if.h>
  14 #include <__type_traits/is_integral.h>
  15
  16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  17 #  pragma GCC system_header
  18 #endif
  19
  20 _LIBCPP_BEGIN_NAMESPACE_STD
  21
  22 namespace __math {
  23
  24 // sqrt
  25
  26 inline _LIBCPP_HIDE_FROM_ABI float sqrt(float __x) _NOEXCEPT { return __builtin_sqrtf(__x); }
  27
  28 template <class = int>
  29 _LIBCPP_HIDE_FROM_ABI double sqrt(double __x) _NOEXCEPT {
  30   return __builtin_sqrt(__x);
  31 }
  32
  33 inline _LIBCPP_HIDE_FROM_ABI long double sqrt(long double __x) _NOEXCEPT { return __builtin_sqrtl(__x); }
  34
  35 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
  36 inline _LIBCPP_HIDE_FROM_ABI double sqrt(_A1 __x) _NOEXCEPT {
  37   return __builtin_sqrt((double)__x);
  38 }
  39
  40 // cbrt
  41
  42 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float cbrt(float __x) _NOEXCEPT { return __builtin_cbrtf(__x); }
  43
  44 template <class = int>
  45 _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI double cbrt(double __x) _NOEXCEPT {
  46   return __builtin_cbrt(__x);
  47 }
  48
  49 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long double cbrt(long double __x) _NOEXCEPT {
  50   return __builtin_cbrtl(__x);
  51 }
  52
  53 template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
  54 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI double cbrt(_A1 __x) _NOEXCEPT {
  55   return __builtin_cbrt((double)__x);
  56 }
  57
  58 } // namespace __math
  59
  60 _LIBCPP_END_NAMESPACE_STD
  61
  62 #endif // _LIBCPP___MATH_ROOTS_H