MEMCMP(3) BSD Programmer's Manual MEMCMP(3)
memcmp - compare byte string
#include <string.h> int memcmp(const void *b1, const void *b2, size_t len);
The memcmp() function compares byte string b1 against byte string b2. Both strings are assumed to be len bytes long.
The memcmp() function returns zero if the two strings are identical, oth- erwise 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.
bcmp(3), strcasecmp(3), strcmp(3), strcoll(3), strxfrm(3)
The memcmp() function conforms to ANSI X3.159-1989 ("ANSI C"). MirOS BSD #10-current June 29, 1991 1
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