MEMCMP(3) |
FreeBSD 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 ‘
\0
’, for example). Zero-length strings are always identical.
STANDARDS
The
memcmp() function conforms to ISO/IEC 9899:1990 (“ISO C90”).