ack/lang/pc/libpc/rdl.c
2018-06-17 22:30:27 +02:00

38 lines
738 B
C

/* $Id$ */
/*
* (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
*
* This product is part of the Amsterdam Compiler Kit.
*
* Permission to use, sell, duplicate or disclose this software must be
* obtained in writing. Requests for such permissions may be sent to
*
* Dr. Andrew S. Tanenbaum
* Wiskundig Seminarium
* Vrije Universiteit
* Postbox 7161
* 1007 MC Amsterdam
* The Netherlands
*
*/
/* Author: J.W. Stevenson */
#include "pc.h"
long _rdl(struct file* f)
{
int is_signed, ch;
long l;
_rf(f);
_skipsp(f);
is_signed = _getsig(f);
ch = _fstdig(f);
l = 0;
do
l = l * 10 - ch;
while ((ch = _nxtdig(f)) >= 0);
return (is_signed ? l : -l);
}