ffs(3) [bsd man page]

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)

BSTRING(3)						   BSD Library Functions Manual 						BSTRING(3)

NAME

     bcmp, bcopy, bzero, memccpy, memchr, memcmp, memcpy, memmove, memset -- byte string operations

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <strings.h>

     int
     bcmp(const void *s1, const void *s2, size_t n);

     void
     bcopy(const void *s1, void *s2, size_t n);

     void
     bzero(void *s, size_t n);

     #include <string.h>

     void *
     memccpy(void *restrict s1, const void *restrict s2, int c, size_t n);

     void *
     memchr(const void *s, int c, size_t n);

     int
     memcmp(const void *s1, const void *s2, size_t n);

     void *
     memcpy(void *restrict s1, const void *restrict s2, size_t n);

     void *
     memmove(void *s1, const void *s2, size_t n);

     void *
     memset(void *s, int c, size_t n);

DESCRIPTION

     These functions operate on variable length strings of bytes.  They do not check for terminating null bytes, as the routines listed in
     string(3) do.

     See the specific manual pages for more information.

LEGACY SYNOPSIS

     #include <string.h>

     The include file <string.h> is necessary and sufficient for all functions.

SEE ALSO

     bcmp(3), bcopy(3), bzero(3), memccpy(3), memchr(3), memcmp(3), memcpy(3), memmove(3), memset(3), compat(5)

STANDARDS

     The functions memchr(), memcmp(), memcpy(), memmove(), and memset() conform to ISO/IEC 9899:1990 (``ISO C90'').

HISTORY

     The functions bzero() and memccpy() appeared in 4.3BSD; the functions bcmp(), bcopy(), appeared in 4.2BSD.

BSD
								   June 4, 1993 							       BSD