1=pod 2 3=head1 NAME 4 5OPENSSL_strcasecmp, OPENSSL_strncasecmp - compare two strings ignoring case 6 7=head1 SYNOPSIS 8 9 #include <openssl/crypto.h> 10 11 int OPENSSL_strcasecmp(const char *s1, const char *s2); 12 int OPENSSL_strncasecmp(const char *s1, const char *s2, size_t n); 13 14=head1 DESCRIPTION 15 16The OPENSSL_strcasecmp function performs a byte-by-byte comparison of the strings 17B<s1> and B<s2>, ignoring the case of the characters. 18 19The OPENSSL_strncasecmp function is similar, except that it compares no more than 20B<n> bytes of B<s1> and B<s2>. 21 22In POSIX-compatible system and on Windows these functions use "C" locale for 23case insensitive. Otherwise the comparison is done in current locale. 24 25=head1 RETURN VALUES 26 27Both functions return an integer less than, equal to, or greater than zero if 28s1 is found, respectively, to be less than, to match, or be greater than s2. 29 30=head1 NOTES 31 32OpenSSL extensively uses case insensitive comparison of ASCII strings. Though 33OpenSSL itself is locale-agnostic, the applications using OpenSSL libraries may 34unpredictably suffer when they use localization (e.g. Turkish locale is 35well-known with a specific I/i cases). These functions use C locale for string 36comparison. 37 38=head1 COPYRIGHT 39 40Copyright 2022 The OpenSSL Project Authors. All Rights Reserved. 41 42Licensed under the Apache License 2.0 (the "License"). You may not use 43this file except in compliance with the License. You can obtain a copy 44in the file LICENSE in the source distribution or at 45L<https://www.openssl.org/source/license.html>. 46 47=cut 48