netbsd man page for strncasecmp

STRCASECMP(3)						   BSD Library Functions Manual 					     STRCASECMP(3)

NAME
     strcasecmp, strncasecmp -- compare strings, ignoring case

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <strings.h>

     int
     strcasecmp(const char *s1, const char *s2);

     int
     strncasecmp(const char *s1, const char *s2, size_t len);

DESCRIPTION
     The strcasecmp() and strncasecmp() functions compare the nul-terminated strings s1 and s2 and return an integer greater than, equal to, or
     less than 0, according to whether s1 is lexicographically greater than, equal to, or less than s2 after translation of each corresponding
     character to lower-case.  The strings themselves are not modified.  The comparison is done using unsigned characters, so that '200' is
     greater than ''.

     The strncasecmp() compares at most len characters.

SEE ALSO
     bcmp(3), memcmp(3), strcmp(3), strcoll(3), strxfrm(3)

HISTORY
     The strcasecmp() and strncasecmp() functions first appeared in 4.4BSD.

NOTES
     If len is zero strncasecmp() returns always 0.

BSD
								   June 9, 1993 							       BSD