mbstowcs.c

来自「minix操作系统最新版本（3.1.1）的源代码」· C语言 代码 · 共 21 行

/*
 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
 * See the copyright notice in the ACK home directory, in the file "Copyright".
 */
/* $Header: /cvsup/minix/src/lib/ansi/mbstowcs.c,v 1.1.1.1 2005/04/21 14:56:05 beng Exp $ */

#include	<stdlib.h>

size_t
mbstowcs(register wchar_t *pwcs, register const char *s, size_t n)
{
	register int i = n;

	while (--i >= 0) {
		if (!(*pwcs++ = *s++))
			return n - i - 1;
	}
	return n - i;
}