[unix-history] / usr / src / lib / libc / stdlib / calloc.c

/* @(#)calloc.c	4.1 (Berkeley) %G% */
/*	calloc - allocate and clear memory block
*/
#define CHARPERINT (sizeof(int)/sizeof(char))
#define NULL 0

char *
calloc(num, size)
unsigned num, size;
{
	register char *mp;
	char *malloc();
	register int *q;
	register m;

	num *= size;
	mp = malloc(num);
	if(mp == NULL)
		return(NULL);
	q = (int *) mp;
	m = (num+CHARPERINT-1)/CHARPERINT;
	while(--m>=0)
		*q++ = 0;
	return(mp);
}

cfree(p, num, size)
char *p;
unsigned num, size;
{
	free(p);
}
Commit	Line	Data
18a0be3d BJ	1	/* @(#)calloc.c 4.1 (Berkeley) %G% */
	2	/* calloc - allocate and clear memory block
	3	*/
	4	#define CHARPERINT (sizeof(int)/sizeof(char))
	5	#define NULL 0
	6
	7	char *
	8	calloc(num, size)
	9	unsigned num, size;
	10	{
	11	register char *mp;
	12	char *malloc();
	13	register int *q;
	14	register m;
	15
	16	num *= size;
	17	mp = malloc(num);
	18	if(mp == NULL)
	19	return(NULL);
	20	q = (int *) mp;
	21	m = (num+CHARPERINT-1)/CHARPERINT;
	22	while(--m>=0)
	23	*q++ = 0;
	24	return(mp);
	25	}
	26
	27	cfree(p, num, size)
	28	char *p;
	29	unsigned num, size;
	30	{
	31	free(p);
	32	}