fclose.c

来自「su 的源代码库」· C语言 代码 · 共 30 行

/* Copyright (c) Colorado School of Mines, 2006.*/
/* All rights reserved.                       */

#include	"sfstdio.h"

/*	Closing a stream.
**	Written by Kiem-Phong Vo
*/

#if __STD_C
int fclose(reg FILE* f)
#else
int fclose(f)
FILE*	f;
#endif
{
	reg int		rv;
	reg Sfio_t*	sf;

	if(!(sf = _sfstream(f)))
		return -1;

	if((rv = sfclose(sf)) >= 0 && f != stdin && f != stdout && f != stderr)
	{	_sfunmap(f); /* remove the FILE to Sfio_t map */
		free(f);
	}

	return rv;
}