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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #pragma once
     30 
     31 /**
     32  * @file bits/strcasecmp.h
     33  * @brief Case-insensitive string comparison.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #include <sys/types.h>
     38 #include <xlocale.h>
     39 
     40 __BEGIN_DECLS
     41 
     42 /**
     43  * [strcasecmp(3)](http://man7.org/linux/man-pages/man3/strcasecmp.3.html) compares two strings
     44  * ignoring case.
     45  *
     46  * Returns an integer less than, equal to, or greater than zero if the first string is less than,
     47  * equal to, or greater than the second string (ignoring case).
     48  */
     49 int strcasecmp(const char* __s1, const char* __s2) __attribute_pure__;
     50 
     51 /**
     52  * Like strcasecmp() but taking a `locale_t`.
     53  */
     54 int strcasecmp_l(const char* __s1, const char* __s2, locale_t __l) __attribute_pure__ __INTRODUCED_IN(23);
     55 
     56 /**
     57  * [strncasecmp(3)](http://man7.org/linux/man-pages/man3/strncasecmp.3.html) compares the first
     58  * `n` bytes of two strings ignoring case.
     59  *
     60  * Returns an integer less than, equal to, or greater than zero if the first `n` bytes of the
     61  * first string is less than, equal to, or greater than the first `n` bytes of the second
     62  * string (ignoring case).
     63  */
     64 int strncasecmp(const char* __s1, const char* __s2, size_t __n) __attribute_pure__;
     65 
     66 /**
     67  * Like strncasecmp() but taking a `locale_t`.
     68  */
     69 int strncasecmp_l(const char* __s1, const char* __s2, size_t __n, locale_t __l) __attribute_pure__ __INTRODUCED_IN(23);
     70 
     71 __END_DECLS
     72