gcc/libstdc++-v3/include/c/bits/std_cstdlib.h

// -*- C++ -*- forwarding header.

// Copyright (C) 1997-1999, 2000 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 2, 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.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

//
// ISO C++ 14882: 20.4.6  C library
//

// Note: This is not a conforming implementation.

#ifndef _CPP_CSTDLIB
#define _CPP_CSTDLIB 1

#include <bits/c++config.h>

#pragma GCC system_header
#include_next <stdlib.h>

namespace std 
{
  using ::div_t;
  using ::ldiv_t;

#ifdef _GLIBCPP_USE_LONG_LONG
# ifdef _GLIBCPP_HAVE_LLDIV_T
  using ::lldiv_t;
# else
  struct lldiv_t
  {
    long long quot;
    long long rem;
  };
# endif
#endif 

  extern "C" double atof(const char*); 
  extern "C" int atoi(const char*); 
  extern "C" long int atol(const char*); 
  extern "C" double strtod(const char*, char**); 
  extern "C" float strtof(const char*, char**); 
  extern "C" long int strtol(const char*, char**, int); 
  extern "C" unsigned long int strtoul(const char*, char**, int);
  extern "C" int rand(void); 
  extern "C" void srand(unsigned int); 
  extern "C" void* calloc(size_t, size_t); 
  extern "C" void free(void*); 
  extern "C" void* malloc(size_t); 
  extern "C" void* realloc(void*, size_t); 
  extern "C" void abort(void); 
  extern "C" int atexit(void (*func)(void)); 
  extern "C" void exit(int); 
  extern "C" void _Exit(int); 
  extern "C" char*getenv(const char*); 
  extern "C" int system(const char*); 
  extern "C" void* bsearch(const void*, const void*, size_t, size_t, 
			   int (*comp)(const void *, const void *)); 
  extern "C" void qsort(void*, size_t, size_t, 
			int (*comp)(const void *, const void *)); 
  extern "C" int abs(int); 
  extern "C" long int labs(long int); 
  extern "C" div_t div(int, int); 
  extern "C" ldiv_t ldiv(long int, long int); 
  extern "C" int mblen(const char*, size_t); 
  extern "C" int mbtowc(wchar_t*, const char*, size_t); 
  extern "C" int wctomb(char*, wchar_t); 
  extern "C" size_t mbstowcs(wchar_t*, const char*, size_t); 
  extern "C" size_t wcstombs(char*, const wchar_t*, size_t);

#ifdef _GLIBCPP_USE_LONG_LONG
  inline long long 
  abs(long long __x) { return __x >= 0 ? __x : -__x; }

  inline long long 
  llabs(long long __x) { return __x >= 0 ? __x : -__x; }

  inline lldiv_t 
  div(long long __n, long long __d)
  { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }

  inline lldiv_t 
  lldiv(long long __n, long long __d)
  { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }

  extern "C" long long int atoll(const char*); 
  extern "C" long long int strtoll(const char*, char**, int); 
  extern "C" unsigned long long int strtoull(const char*, char**, int); 
#endif

#ifdef _GLIBCPP_HAVE_STRTOLD
  extern "C" long double strtold(const char*, char**); 
#endif
}

#endif