MEMSET

memset − fill memory with a constant byte

#include <string.h>

void *memset(void *s, int c, size_t n);

The memset() function fills the first n bytes of the memory area pointed to by s with the constant byte c.

The memset() function returns a pointer to the memory area s.

SVID 3, BSD 4.3, ISO 9899

bzero(3), swab(3)