Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #778
Difficulty: Medium
Harmonic analysis is a branch of mathematics concerned with the representation of functions or signals as the superposition of basic waves.
True or False?
Linux & Unix Commands - Search Man Pages

memcmp(3) [netbsd man page]

MEMCMP(3)						   BSD Library Functions Manual 						 MEMCMP(3)

NAME
memcmp -- compare byte string LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <string.h> int memcmp(const void *b1, const void *b2, size_t len); DESCRIPTION
The memcmp() function compares byte string b1 against byte string b2. Both strings are assumed to be len bytes long. RETURN VALUES
The memcmp() function returns zero if the two strings are identical, otherwise returns the difference between the first two differing bytes (treated as unsigned char values, so that '200' is greater than '', for example). Zero-length strings are always identical. SEE ALSO
bcmp(3), strcasecmp(3), strcmp(3), strcoll(3), strxfrm(3) STANDARDS
The memcmp() function conforms to ANSI X3.159-1989 (``ANSI C89''). BSD
June 4, 1993 BSD

Check Out this Related Man Page

MEMCMP(3)						     Linux Programmer's Manual							 MEMCMP(3)

NAME
memcmp - compare memory areas SYNOPSIS
#include <string.h> int memcmp(const void *s1, const void *s2, size_t n); DESCRIPTION
The memcmp() function compares the first n bytes (each interpreted as unsigned char) of the memory areas s1 and s2. RETURN VALUE
The memcmp() function returns an integer less than, equal to, or greater than zero if the first n bytes of s1 is found, respectively, to be less than, to match, or be greater than the first n bytes of s2. For a nonzero return value, the sign is determined by the sign of the difference between the first pair of bytes (interpreted as unsigned char) that differ in s1 and s2. CONFORMING TO
SVr4, 4.3BSD, C89, C99, POSIX.1-2001. SEE ALSO
bcmp(3), strcasecmp(3), strcmp(3), strcoll(3), strncasecmp(3), strncmp(3), wmemcmp(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2012-11-25 MEMCMP(3)

Featured Tech Videos