BSD 2.11 - man page for bzero (bsd section 3)

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BSTRING(3)									       BSTRING(3)

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

       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;

       long i;

       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.

       The bcopy routine take parameters backwards from strcpy.

4.2 Berkeley Distribution		   May 15, 1985 			       BSTRING(3)
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