bsd man page for bcopy

BSTRING(3)						     Library Functions Manual							BSTRING(3)

NAME
       bcopy, bcmp, bzero, ffs - bit and byte string operations

SYNOPSIS
       bcopy(src, dst, length)
       char *src, *dst;
       int length;

       bcmp(b1, b2, length)
       char *b1, *b2;
       int length;

       bzero(b, length)
       char *b;
       int length;

       ffs(i)
       long i;

DESCRIPTION
       The  functions  bcopy,  bcmp,  and  bzero operate on variable length strings of bytes.  They do not check for null bytes as the routines in
       string(3) do.

       Bcopy copies length bytes from string src to the string dst.

       Bcmp compares byte string b1 against byte string b2, returning zero if they are identical, non-zero otherwise.  Both strings are assumed to
       be length bytes long.

       Bzero places length 0 bytes in the string b1.

       Ffs  find  the first bit set in the argument passed it and returns the index of that bit.  Bits are numbered starting at 1.  A return value
       of 0 indicates the value passed is zero.

BUGS
       The bcopy routine take parameters backwards from strcpy.

4.2 Berkeley Distribution					   May 15, 1985 							BSTRING(3)