1// -*- C++ -*- forwarding header.
2
3// Copyright (C) 2000-2021 Free Software Foundation, Inc.
4//
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)
9// any later version.
10
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.
15
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.
19
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/>.
24
25//
26// ISO C++ 14882: 26.5  C library
27//
28
29#ifndef _GLIBCXX_CMATH
30#define _GLIBCXX_CMATH 1
31
32#pragma GCC system_header
33
34#include <bits/c++config.h>
35
36#include_next <math.h>
37
38// Get rid of those macros defined in <math.h> in lieu of real functions.
39#undef abs
40#undef div
41#undef acos
42#undef asin
43#undef atan
44#undef atan2
45#undef ceil
46#undef cos
47#undef cosh
48#undef exp
49#undef fabs
50#undef floor
51#undef fmod
52#undef frexp
53#undef ldexp
54#undef log
55#undef log10
56#undef modf
57#undef pow
58#undef sin
59#undef sinh
60#undef sqrt
61#undef tan
62#undef tanh
63
64#undef fpclassify
65#undef isfinite
66#undef isinf
67#undef isnan
68#undef isnormal
69#undef signbit
70#undef isgreater
71#undef isgreaterequal
72#undef isless
73#undef islessequal
74#undef islessgreater
75#undef isunordered
76
77namespace std _GLIBCXX_VISIBILITY(default)
78{
79  inline double
80  abs(double __x)
81  { return __builtin_fabs(__x); }
82
83  inline float
84  abs(float __x)
85  { return __builtin_fabsf(__x); }
86
87  inline long double
88  abs(long double __x)
89  { return __builtin_fabsl(__x); }
90
91#if _GLIBCXX_HAVE_MODFF
92  inline float
93  modf(float __x, float* __iptr) { return modff(__x, __iptr); }
94#else
95  inline float
96  modf(float __x, float* __iptr)
97  {
98    double __tmp;
99    double __res = modf(static_cast<double>(__x), &__tmp);
100    *__iptr = static_cast<float>(__tmp);
101    return __res;
102  }
103#endif
104
105#if _GLIBCXX_HAVE_MODFL
106  inline long double
107  modf(long double __x, long double* __iptr) { return modfl(__x, __iptr); }
108#else
109  inline long double
110  modf(long double __x, long double* __iptr)
111  {
112    double __tmp;
113    double __res = modf(static_cast<double>(__x), &__tmp);
114    * __iptr = static_cast<long double>(__tmp);
115    return __res;
116  }
117#endif
118}
119#endif
120