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#include <stdlib.h>
#include <string.h>
/** allocate and initialize memory **/
void * calloc(size_t nmemb, size_t size)
{
void *p = NULL;
size_t total = nmemb * size;
if (total < nmemb || total < size) {
return NULL;
}
if (nmemb == 0 || size == 0) {
return NULL;
}
p = malloc(total);
if (p != NULL) {
memset(p, 0, size * nmemb);
}
return p;
}
/***
allocates an array of ARGUMENT(nmemb) elements, each of which
are ARGUMENT(size) bytes, and sets all their bits to 0.
***/
/*
UNSPECIFIED(The order and contiguity of space allocated by success calls)
IMPLEMENTATION(What is returned if ARGUMENT(nmemb) or ARGUMENT(size) is 0)
RETURN_FAILURE(CONSTANT(NULL))
RETURN_SUCCESS(a pointer to the newly allocated memory)
STDC(1)
*/
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