#include <sys/types.h> #include <stdint.h>#include <stdlib.h>#include <string.h>#include <stdio.h>#include <stdarg.h> #include <err.h>#include <errno.h> void*emalloc(size_t size){	void	*v; 	if((v = malloc(size)) == NULL)		err(1, "emalloc: out of memory");	memset(v, 0, size);	return v;}  void*erealloc(void *p, size_t size){	void	*v; 	if((v = realloc(p, size)) == NULL)		err(1, "emalloc: out of memory");	return v;} void*ecalloc(size_t nmemb, size_t size){	void 	*v; 	if((v = calloc(nmemb, size)) == NULL)		err(1, "ecalloc: out of memory");	return v;} char*estrdup(const char *s){	char	*r; 	if((r = strdup(s)) == NULL)		err(1, "estrdup: out of memory");	return r;}