xref: /csrg-svn/usr.bin/pascal/libpc/READ8.c (revision 1680)
1 /* Copyright (c) 1979 Regents of the University of California */
2 
3 static char sccsid[] = "@(#)READ8.c 1.1 10/30/80";
4 
5 #include "h00vars.h"
6 #include "h01errs.h"
7 
8 double
9 READ8(curfile)
10 
11 	register struct iorec	*curfile;
12 {
13 	double			data;
14 
15 	if (curfile->funit & FWRITE) {
16 		ERROR(EREADIT, curfile->pfname);
17 		return;
18 	}
19 	UNSYNC(curfile);
20 	if (fscanf(curfile->fbuf, "%lf", &data) == 0) {
21 		ERROR(EBADFNUM, curfile->pfname);
22 		return;
23 	}
24 	curfile->funit |= SYNC;
25 	return data;
26 }
27