ref: 4696de84b4553d33d2bc1649a55d303c1788a41b
dir: /sys/src/ape/lib/ap/gen/calloc.c/
#include <stdlib.h>
#include <string.h>
void *
calloc(size_t n, size_t s)
{
	void *v;
	if(n > 1 && ((size_t)-1)/n < s)
		return 0;
	n *= s;
	if(v = malloc(n))
		memset(v, 0, n);
	return v;
}