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BSTRING(3)                 Library Functions Manual                 BSTRING(3)



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

SYNOPSIS
       void
       bcopy(b1, b2, length)
       char *b1, *b2;
       int length;

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

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

       int ffs(i)
       int 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 b1 to the string b2.  Overlap-
       ping strings are handled correctly.

       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.  bcmp() of length zero bytes always returns zero.

       bzero() places length 0 bytes in the string b.

       ffs() finds the first bit set in the argument passed it and returns the
       index  of that bit.  Bits are numbered starting at 1 from the right.  A
       return value of zero indicates that the value passed is zero.

NOTES
       The bcmp() and bcopy() routines take parameters backwards from strcmp()
       and strcpy().

SEE ALSO
       string(3)



                               23 November 1987                     BSTRING(3)