/*** *wcscmp.c - routine to compare two wchar_t strings (for equal, less, or greater) * * Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved. * *Purpose: * Compares two wide-character strings, determining their lexical order. * *Revision History: * 09-09-91 ETC Created from strcmp.c. * 04-07-92 KRS Updated and ripped out _INTL switches. * *******************************************************************************/ #include #include /*** *wcscmp - compare two wchar_t strings, * returning less than, equal to, or greater than * *Purpose: * wcscmp compares two wide-character strings and returns an integer * to indicate whether the first is less than the second, the two are * equal, or whether the first is greater than the second. * * Comparison is done wchar_t by wchar_t on an UNSIGNED basis, which is to * say that Null wchar_t(0) is less than any other character. * *Entry: * const wchar_t * src - string for left-hand side of comparison * const wchar_t * dst - string for right-hand side of comparison * *Exit: * returns -1 if src < dst * returns 0 if src == dst * returns +1 if src > dst * *Exceptions: * *******************************************************************************/ int _CALLTYPE1 wcscmp ( const wchar_t * src, const wchar_t * dst ) { int ret = 0 ; while( ! (ret = (int)(*src - *dst)) && *dst) ++src, ++dst; if ( ret < 0 ) ret = -1 ; else if ( ret > 0 ) ret = 1 ; return( ret ); }