58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/****************************************************************************
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* libs/libc/wchar/lib_wcscmp.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <wchar.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: wcscmp
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*
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* Description:
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* The wcscmp() function returns zero if the wide-character strings at s1
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* and s2 are equal. It returns an integer greater than zero if at the
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* first differing position i, the corresponding wide-character s1[i] is
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* greater than s2[i]. It returns an integer less than zero if at the
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* first differing position i, the corresponding wide-character s1[i] is
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* less than s2[i]
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*
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****************************************************************************/
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int wcscmp(FAR const wchar_t *s1, FAR const wchar_t *s2)
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{
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while (*s1 == *s2++)
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{
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if (*s1++ == 0)
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{
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return 0;
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}
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}
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return *s1 - *--s2;
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}
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