check.c

/**
>HEADER
    Copyright (c) 2004 Haixu Tang hatang@indiana.edu

    This file is part of the RepGraph package.

    RepGraph 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.

    RepGraph 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 RepGraph.  If not, see <http://www.gnu.org/licenses/>.
<HEADER
**/

/* ckopen - open file; check for success */

#include <stdinc.h>
#include <extfunc.h>

void *ckalloc(int amount);
FILE *ckopen(char *name, char *mode);

FILE *ckopen(char *name, char *mode)
{
	FILE *fp;

	if ((fp = fopen(name, mode)) == NULL)	{
		printf("Cannot open %s.\n", name);
		exit(-1);
	}
	return(fp);
}


/* ckalloc - allocate space; check for success */

void *ckalloc(int amount)
{
	void *p;

	if(amount == 0)	{
		amount = (unsigned) 100;
	}
	if ((p = (void *) calloc( (unsigned) amount, 1)) == NULL)	{
		printf("Ran out of memory.\n");
                printf("There may be errors as follows:\n");
                printf("1) Not enough memory.\n");
                printf("2) The ARRAY may be overrode.\n");
                printf("3) The wild pointers.\n");
                exit(-1);
	}
	return(p);
}