BZERO(3) BSD Programmer's Manual BZERO(3)
bzero - write zeroes to a byte string
#include <string.h> void bzero(void *b, size_t len);
The bzero() function writes len zero bytes to the string b. If len is zero, bzero() does nothing.
memset(3), swab(3)
A bzero() function appeared in 4.3BSD. MirBSD #10-current April 19, 1991 1