1*b0d17251Schristos=pod 2*b0d17251Schristos 3*b0d17251Schristos=head1 NAME 4*b0d17251Schristos 5*b0d17251SchristosOPENSSL_strcasecmp, OPENSSL_strncasecmp - compare two strings ignoring case 6*b0d17251Schristos 7*b0d17251Schristos=head1 SYNOPSIS 8*b0d17251Schristos 9*b0d17251Schristos #include <openssl/crypto.h> 10*b0d17251Schristos 11*b0d17251Schristos int OPENSSL_strcasecmp(const char *s1, const char *s2); 12*b0d17251Schristos int OPENSSL_strncasecmp(const char *s1, const char *s2, size_t n); 13*b0d17251Schristos 14*b0d17251Schristos=head1 DESCRIPTION 15*b0d17251Schristos 16*b0d17251SchristosThe OPENSSL_strcasecmp function performs a byte-by-byte comparison of the strings 17*b0d17251SchristosB<s1> and B<s2>, ignoring the case of the characters. 18*b0d17251Schristos 19*b0d17251SchristosThe OPENSSL_strncasecmp function is similar, except that it compares no more than 20*b0d17251SchristosB<n> bytes of B<s1> and B<s2>. 21*b0d17251Schristos 22*b0d17251SchristosIn POSIX-compatible system and on Windows these functions use "C" locale for 23*b0d17251Schristoscase insensitive. Otherwise the comparison is done in current locale. 24*b0d17251Schristos 25*b0d17251Schristos=head1 RETURN VALUES 26*b0d17251Schristos 27*b0d17251SchristosBoth functions return an integer less than, equal to, or greater than zero if 28*b0d17251Schristoss1 is found, respectively, to be less than, to match, or be greater than s2. 29*b0d17251Schristos 30*b0d17251Schristos=head1 NOTES 31*b0d17251Schristos 32*b0d17251SchristosOpenSSL extensively uses case insensitive comparison of ASCII strings. Though 33*b0d17251SchristosOpenSSL itself is locale-agnostic, the applications using OpenSSL libraries may 34*b0d17251Schristosunpredictably suffer when they use localization (e.g. Turkish locale is 35*b0d17251Schristoswell-known with a specific I/i cases). These functions use C locale for string 36*b0d17251Schristoscomparison. 37*b0d17251Schristos 38*b0d17251Schristos=head1 COPYRIGHT 39*b0d17251Schristos 40*b0d17251SchristosCopyright 2022 The OpenSSL Project Authors. All Rights Reserved. 41*b0d17251Schristos 42*b0d17251SchristosLicensed under the Apache License 2.0 (the "License"). You may not use 43*b0d17251Schristosthis file except in compliance with the License. You can obtain a copy 44*b0d17251Schristosin the file LICENSE in the source distribution or at 45*b0d17251SchristosL<https://www.openssl.org/source/license.html>. 46*b0d17251Schristos 47*b0d17251Schristos=cut 48