libcxx/include/__math/modulo.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_MODULO_H
  10 #define _LIBCPP___MATH_MODULO_H
  11
  12 #include <__config>
  13 #include <__type_traits/enable_if.h>
  14 #include <__type_traits/is_arithmetic.h>
  15 #include <__type_traits/is_same.h>
  16 #include <__type_traits/promote.h>
  17
  18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  19 #  pragma GCC system_header
  20 #endif
  21
  22 _LIBCPP_BEGIN_NAMESPACE_STD
  23
  24 namespace __math {
  25
  26 // fmod
  27
  28 inline _LIBCPP_HIDE_FROM_ABI float fmod(float __x, float __y) _NOEXCEPT { return __builtin_fmodf(__x, __y); }
  29
  30 template <class = int>
  31 _LIBCPP_HIDE_FROM_ABI double fmod(double __x, double __y) _NOEXCEPT {
  32   return __builtin_fmod(__x, __y);
  33 }
  34
  35 inline _LIBCPP_HIDE_FROM_ABI long double fmod(long double __x, long double __y) _NOEXCEPT {
  36   return __builtin_fmodl(__x, __y);
  37 }
  38
  39 template <class _A1, class _A2, __enable_if_t<is_arithmetic<_A1>::value && is_arithmetic<_A2>::value, int> = 0>
  40 inline _LIBCPP_HIDE_FROM_ABI typename __promote<_A1, _A2>::type fmod(_A1 __x, _A2 __y) _NOEXCEPT {
  41   using __result_type = typename __promote<_A1, _A2>::type;
  42   static_assert(!(_IsSame<_A1, __result_type>::value && _IsSame<_A2, __result_type>::value), "");
  43   return __math::fmod((__result_type)__x, (__result_type)__y);
  44 }
  45
  46 // modf
  47
  48 inline _LIBCPP_HIDE_FROM_ABI float modf(float __x, float* __y) _NOEXCEPT { return __builtin_modff(__x, __y); }
  49
  50 template <class = int>
  51 _LIBCPP_HIDE_FROM_ABI double modf(double __x, double* __y) _NOEXCEPT {
  52   return __builtin_modf(__x, __y);
  53 }
  54
  55 inline _LIBCPP_HIDE_FROM_ABI long double modf(long double __x, long double* __y) _NOEXCEPT {
  56   return __builtin_modfl(__x, __y);
  57 }
  58
  59 } // namespace __math
  60
  61 _LIBCPP_END_NAMESPACE_STD
  62
  63 #endif // _LIBCPP___MATH_MODULO_H