/*** *wcscmp.c - routine to compare 2 wide character strings (equal/less/greater) * * Copyright (c) 1985-1988, Microsoft Corporation. All Rights Reserved. * *Purpose: * Compares two wide character strings, determining their lexical order. * *Revision History: * 04-07-91 IanJa C version created. * *******************************************************************************/ #include /*** *wcscmp - compare two wide character 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 byte by byte on an UNSIGNED basis, which is to * say that Null (0) is less than any other character (1-0xffff). * *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 __cdecl wcscmp(const wchar_t * src, const wchar_t * dst) { int ret = 0 ; while( ! (ret = *src - *dst) && *dst) ++src, ++dst; if ( ret < 0 ) ret = -1 ; else if ( ret > 0 ) ret = 1 ; return ret; }