# 2.11BSD#431 - /usr/man/cat3/ffs.0

    BSTRING(3)	    UNIX Programmer's 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, return-
         ing 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.

    Printed 11/26/99	  May 15, 1985				1

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