BSTRING(3C)							   BSTRING(3C)

NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

     #include <strings.h>

     void bcopy(const void *src, void *dst, size_t length);

     int bcmp(const void *b1, const void *b2, size_t length);

     void bzero(void *b, size_t	length);

     void blkclr(void *b, size_t length);

     int ffs(unsigned int i);

DESCRIPTION    [Toc]    [Back]

     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 and blkclr place length zero	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.  A return value of 0
     indicates the value passed	is zero.

NOTE    [Toc]    [Back]

     The use of	overlapping buffers with bcopy is not guaranteed to work.  Use
     the memmove(3C) function if the buffers might overlap.

SEE ALSO    [Toc]    [Back]

     memory(3c)


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