63 lines
2.5 KiB
C
63 lines
2.5 KiB
C
/****************************************************************************
|
|
* libs/libc/wchar/lib_wcsncmp.c
|
|
*
|
|
* Copyright © 2005-2014 Rich Felker, et al.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <wchar.h>
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: wcsncmp
|
|
*
|
|
* Description:
|
|
* Compares up to "n" characters of the C wide string "l" to those of
|
|
* the C wide string "r".
|
|
*
|
|
* Input Parameters:
|
|
* l - the wchar string to be compared
|
|
* r - the wchar string to be compared
|
|
* n - maximum number of wide characters to be compared
|
|
*
|
|
* Returned Value:
|
|
* Return 0 if the characters compared in both strings form the same
|
|
* string.
|
|
* Return value greater than 0 if the first character that does not match
|
|
* has a greater value in "l" than in "r"
|
|
* Reutrn value less than 0 otherswise
|
|
*
|
|
****************************************************************************/
|
|
|
|
int wcsncmp(FAR const wchar_t *l, FAR const wchar_t *r, size_t n)
|
|
{
|
|
for (; n && *l == *r && *l && *r; n--, l++, r++);
|
|
return n ? *l - *r : 0;
|
|
}
|