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/***
*wcsrchr.c - find last occurrence of wchar_t character in wide string
*
* Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines wcsrchr() - find the last occurrence of a given character
* in a string (wide-characters).
*
*Revision History:
* 09-09-91 ETC Created from strrchr.c.
* 04-07-92 KRS Updated and ripped out _INTL switches.
*
*******************************************************************************/
#include <cruntime.h>
#include <string.h>
/***
*wchar_t *wcsrchr(string, ch) - find last occurrence of ch in wide string
*
*Purpose:
* Finds the last occurrence of ch in string. The terminating
* null character is used as part of the search (wide-characters).
*
*Entry:
* wchar_t *string - string to search in
* wchar_t ch - character to search for
*
*Exit:
* returns a pointer to the last occurrence of ch in the given
* string
* returns NULL if ch does not occurr in the string
*
*Exceptions:
*
*******************************************************************************/
wchar_t * _CALLTYPE1 wcsrchr (
const wchar_t * string,
wchar_t ch
)
{
wchar_t *start = (wchar_t *)string;
while (*string++) /* find end of string */
;
/* search towards front */
while (--string != start && *string != (wchar_t)ch)
;
if (*string == (wchar_t)ch) /* wchar_t found ? */
return( (wchar_t *)string );
return(NULL);
}
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