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

84 lines
1.1 KiB
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"
int _mdi(int j, int i)
{
if (j <= 0)
_trp(EMOD);
i = i % j;
if (i < 0)
i += j;
return (i);
}
long _mdil(long j, long i)
{
if (j <= 0)
_trp(EMOD);
i = i % j;
if (i < 0)
i += j;
return (i);
}
int _dvi(unsigned int j, unsigned int i)
{
int neg = 0;
if ((int)j < 0)
{
j = -(int)j;
neg = 1;
}
if ((int)i < 0)
{
i = -(int)i;
neg = !neg;
}
i = i / j;
if (neg)
return -(int)i;
return i;
}
long _dvil(unsigned long j, unsigned long i)
{
int neg = 0;
if ((long)j < 0)
{
j = -(long)j;
neg = 1;
}
if ((long)i < 0)
{
i = -(long)i;
neg = !neg;
}
i = i / j;
if (neg)
return -(long)i;
return i;
}