minix/lib/ack/libp/rdl.c

41 lines
846 B
C
Executable file

/* $Header$ */
/*
* (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_file.h>
extern _rf();
extern _skipsp();
extern int _getsig();
extern int _fstdig();
extern int _nxtdig();
long _rdl(f) 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);
}