1 // -*- C++ -*- forwarding header.
3 // Copyright (C) 2000-2024 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
26 // ISO C++ 14882: 26.5 C library
29 #ifndef _GLIBCXX_CMATH
30 #define _GLIBCXX_CMATH 1
32 #ifdef _GLIBCXX_SYSHDR
33 #pragma GCC system_header
36 #include <bits/c++config.h>
38 #pragma GCC diagnostic push
39 #pragma GCC diagnostic ignored "-Wpedantic" // include_next
41 #include_next <math.h>
43 #pragma GCC diagnostic pop
45 // Get rid of those macros defined in <math.h> in lieu of real functions.
84 namespace std _GLIBCXX_VISIBILITY(default)
88 { return __builtin_fabs(__x); }
92 { return __builtin_fabsf(__x); }
96 { return __builtin_fabsl(__x); }
98 #if _GLIBCXX_HAVE_MODFF
100 modf(float __x, float* __iptr) { return modff(__x, __iptr); }
103 modf(float __x, float* __iptr)
106 double __res = modf(static_cast<double>(__x), &__tmp);
107 *__iptr = static_cast<float>(__tmp);
112 #if _GLIBCXX_HAVE_MODFL
114 modf(long double __x, long double* __iptr) { return modfl(__x, __iptr); }
117 modf(long double __x, long double* __iptr)
120 double __res = modf(static_cast<double>(__x), &__tmp);
121 * __iptr = static_cast<long double>(__tmp);