File:  [Research Unix] / researchv10dc / cmd / pascal / libpc / READ8.c
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 17:21:33 2018 UTC (8 years, 3 months ago) by root
Branches: belllabs, MAIN
CVS tags: researchv10, HEAD
researchv10 Dan Cross

/* Copyright (c) 1979 Regents of the University of California */

static char sccsid[] = "@(#)READ8.c 1.4 6/10/81";

#include "h00vars.h"

double
READ8(curfile)

	register struct iorec	*curfile;
{
	double			data;
	int			retval;

	if (curfile->funit & FWRITE) {
		ERROR("%s: Attempt to read, but open for writing\n",
			curfile->pfname);
		return;
	}
	UNSYNC(curfile);
	retval = fscanf(curfile->fbuf, "%lf", &data);
	if (retval == EOF) {
		ERROR("%s: Tried to read past end of file\n", curfile->pfname);
		return;
	}
	if (retval == 0) {
		ERROR("%s: Bad data found on real read\n", curfile->pfname);
		return;
	}
	curfile->funit &= ~EOLN;
	curfile->funit |= SYNC;
	return data;
}

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