#include "config.h"
#include "f2c.h"
#include "fio.h"

 static FILE *
unit_chk(integer Unit, char *who)
{
	if (Unit >= MXUNIT || Unit < 0)
		f__fatal(101, who);
	return f__units[Unit].ufd;
	}

 integer
G77_ftell_0 (integer *Unit)
{
	FILE *f;
	return (f = unit_chk(*Unit, "ftell")) ? (integer) FTELL(f) : -1L;
	}

 integer
G77_fseek_0 (integer *Unit, integer *offset, integer *xwhence)
{
	FILE *f;
	int w = (int)*xwhence;
#ifdef SEEK_SET
	static int wohin[3] = { SEEK_SET, SEEK_CUR, SEEK_END };
#endif
	if (w < 0 || w > 2)
		w = 0;
#ifdef SEEK_SET
	w = wohin[w];
#endif
	return	!(f = unit_chk(*Unit, "fseek"))
		|| FSEEK(f, (off_t) *offset, w) ? 1 : 0;
	}