path: root/include/stdlib.h

/**
 * slibc — Yet another C library
 * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
 * 
 * This program 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 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef _STDLIB_H
#define _STDLIB_H
#include <slibc/version.h>
#include <slibc/features.h>


#include <malloc.h>



#define __NEED_size_t
#define __NEED_wchar_t
#define __NEED_div_t
#define __NEED_ldiv_t
#define __NEED_lldiv_t

#include <bits/types.h>


/**
 * `NULL`'s canonical header is <stddef.h>.
 */
#ifndef NULL
# define NULL  ((void*)0)
#endif


/**
 * The value a process shall exit with upon
 * success completion.
 */
#define EXIT_SUCCESS  0

/**
 * A standard value a process can exit with
 * if it terminates because of failure.
 */
#define EXIT_FAILURE  1



/**
 * Perform an integer division and return
 * both the quotient and the remainder.
 * 
 * @param   numerator    The numerator.
 * @param   denominator  The denominator.
 * @return               The quotient in `.quot`, and
 *                       the remainder in `.rem`.
 */
div_t div(int, int)
  __GCC_ONLY(__attribute__((const)));

/**
 * Perform an integer division and return
 * both the quotient and the remainder.
 * 
 * @param   numerator    The numerator.
 * @param   denominator  The denominator.
 * @return               The quotient in `.quot`, and
 *                       the remainder in `.rem`.
 */
ldiv_t ldiv(long, long)
  __GCC_ONLY(__attribute__((const)));

/**
 * Perform an integer division and return
 * both the quotient and the remainder.
 * 
 * @param   numerator    The numerator.
 * @param   denominator  The denominator.
 * @return               The quotient in `.quot`, and
 *                       the remainder in `.rem`.
 */
lldiv_t lldiv(long long, long long)
  __GCC_ONLY(__attribute__((const)));



/* TODO implement rand-functions */
#define RAND_MAX  1
int rand(void);
int rand_r(unsigned int* seed);
void srand(unsigned int seed);



#endif