minix/lib/libminc/calloc.c
Evgeniy Ivanov 5da4a0bd56 Move minimal libc from libsys into separate lib.
Now users can choose between libsys, libsys + libminc and
libsys + libc. E.g. PUFFS/FUSE servers need libsys + libc while
old servers can use libsys + libminc.
2011-07-09 22:32:38 +02:00

28 lines
530 B
C

/* $Header$ */
#include <stdlib.h>
/* replace undef by define */
#define ALIGN_EIGHT_BYTES /* Use 8-byte alignment. */
#ifdef ALIGN_EIGHT_BYTES
#define ALIGN_SIZE 8
#else
#define ALIGN_SIZE sizeof(size_t)
#endif
#define ALIGN(x) (((x) + (ALIGN_SIZE - 1)) & ~(ALIGN_SIZE - 1))
void *
calloc(size_t nelem, size_t elsize)
{
register char *p;
register size_t *q;
size_t size = ALIGN(nelem * elsize);
p = malloc(size);
if (p == NULL) return NULL;
q = (size_t *) (p + size);
while ((char *) q > p) *--q = 0;
return p;
}