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

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LEARN ABOUT NETBSD

memchr

MEMCHR(3)						   BSD Library Functions Manual 						 MEMCHR(3)

NAME

     memchr, memrchr -- locate byte in byte string

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <string.h>

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

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

DESCRIPTION

     The memchr() function locates the first occurrence of c (converted to an unsigned char) in string b.  The memrchr() function locates the last
     occurrence of c (converted to an unsigned char) in string b.

RETURN VALUES

     The memchr() and memrchr() functions return a pointer to the byte located, or NULL if no such byte exists within len bytes.

SEE ALSO

     index(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)

STANDARDS

     The memchr() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								  April 10, 2009							       BSD