/*************************************************************
 * File: lib/realloc.c
 * Purpose: Part of C runtime library
 * Author: Phil Bunce (pjb@carmel.com)
 * Revision History:
 *	970304	Start of revision history
 */

/* This is rather an unsophisticated implementation because it copies
 * the data to a new area and frees the old one. It would be better to
 * release the unused portion  of the memory block without performing
 * a copy.
 */

#include <malloc.h>

void *realloc(void *ptr,size_t size)
{
char *p;
unsigned int sz;

p = malloc(size);
if (!p) return(p);
sz = allocsize(ptr);
memcpy(p,ptr,(sz>size)?size:sz);
free(ptr);
return(p);
}