mirror of git://gcc.gnu.org/git/gcc.git
111 lines
3.2 KiB
C++
111 lines
3.2 KiB
C++
// -*- C++ -*- C library enhancements header.
|
|
|
|
// Copyright (C) 2016-2017 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file include/bits/std_abs.h
|
|
* This is an internal header file, included by other library headers.
|
|
* Do not attempt to use it directly. @headername{cmath, cstdlib}
|
|
*/
|
|
|
|
#ifndef _GLIBCXX_BITS_STD_ABS_H
|
|
#define _GLIBCXX_BITS_STD_ABS_H
|
|
|
|
#pragma GCC system_header
|
|
|
|
#include <bits/c++config.h>
|
|
|
|
#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
|
|
#include_next <stdlib.h>
|
|
#ifdef __CORRECT_ISO_CPP_MATH_H_PROTO
|
|
# include_next <math.h>
|
|
#endif
|
|
#undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS
|
|
|
|
#undef abs
|
|
|
|
extern "C++"
|
|
{
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
using ::abs;
|
|
|
|
#ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
|
|
inline long
|
|
abs(long __i) { return __builtin_labs(__i); }
|
|
#endif
|
|
|
|
#ifdef _GLIBCXX_USE_LONG_LONG
|
|
inline long long
|
|
abs(long long __x) { return __builtin_llabs (__x); }
|
|
#endif
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 2192. Validity and return type of std::abs(0u) is unclear
|
|
// 2294. <cstdlib> should declare abs(double)
|
|
|
|
#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO
|
|
inline _GLIBCXX_CONSTEXPR double
|
|
abs(double __x)
|
|
{ return __builtin_fabs(__x); }
|
|
|
|
inline _GLIBCXX_CONSTEXPR float
|
|
abs(float __x)
|
|
{ return __builtin_fabsf(__x); }
|
|
|
|
inline _GLIBCXX_CONSTEXPR long double
|
|
abs(long double __x)
|
|
{ return __builtin_fabsl(__x); }
|
|
#endif
|
|
|
|
#if defined(__GLIBCXX_TYPE_INT_N_0)
|
|
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_0
|
|
abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
|
|
#endif
|
|
#if defined(__GLIBCXX_TYPE_INT_N_1)
|
|
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_1
|
|
abs(__GLIBCXX_TYPE_INT_N_1 __x) { return __x >= 0 ? __x : -__x; }
|
|
#endif
|
|
#if defined(__GLIBCXX_TYPE_INT_N_2)
|
|
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_2
|
|
abs(__GLIBCXX_TYPE_INT_N_2 __x) { return __x >= 0 ? __x : -__x; }
|
|
#endif
|
|
#if defined(__GLIBCXX_TYPE_INT_N_3)
|
|
inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_3
|
|
abs(__GLIBCXX_TYPE_INT_N_3 __x) { return __x >= 0 ? __x : -__x; }
|
|
#endif
|
|
|
|
#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128)
|
|
inline _GLIBCXX_CONSTEXPR
|
|
__float128
|
|
abs(__float128 __x)
|
|
{ return __x < 0 ? -__x : __x; }
|
|
#endif
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
}
|
|
|
|
#endif // _GLIBCXX_BITS_STD_ABS_H
|