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

/*	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
18e5fa7e BJ	1	/* calloc - allocate and clear memory block
	2	*/
	3	#define CHARPERINT (sizeof(int)/sizeof(char))
	4	#define NULL 0
	5
	6	char *
	7	calloc(num, size)
	8	unsigned num, size;
	9	{
	10	register char *mp;
	11	char *malloc();
	12	register int *q;
	13	register m;
	14
	15	num *= size;
	16	mp = malloc(num);
	17	if(mp == NULL)
	18	return(NULL);
	19	q = (int *) mp;
	20	m = (num+CHARPERINT-1)/CHARPERINT;
	21	while(--m>=0)
	22	*q++ = 0;
	23	return(mp);
	24	}
	25
	26	cfree(p, num, size)
	27	char *p;
	28	unsigned num, size;
	29	{
	30	free(p);
	31	}