How can I know where the segment of memory is all Zero? Post: 302378859

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LEARN ABOUT FREEBSD

bstring

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 <string.h>

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

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

     void
     bzero(void *b, size_t len);

     void *
     memchr(const void *b, int c, size_t len);

     int
     memcmp(const void *b1, const void *b2, size_t len);

     void *
     memccpy(void *dst, const void *src, int c, size_t len);

     void *
     memcpy(void *dst, const void *src, size_t len);

     void *
     memmove(void *dst, const void *src, size_t len);

     void *
     memset(void *b, int c, size_t len);

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.

SEE ALSO

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

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