33 lines
912 B
C
33 lines
912 B
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*/
|
|
/* $Header$ */
|
|
/* COMPILER ARITHMETIC */
|
|
|
|
/* Normally the compiler does its internal arithmetics in longs
|
|
native to the source machine, which is always good for local
|
|
compilations, and generally OK too for cross compilations
|
|
downwards and sidewards. For upwards cross compilation and
|
|
to save storage on small machines, SPECIAL_ARITHMETICS will
|
|
be handy.
|
|
*/
|
|
|
|
#include "spec_arith.h"
|
|
|
|
#ifndef SPECIAL_ARITHMETICS
|
|
|
|
#include <em_arith.h> /* obtain definition of "arith" */
|
|
|
|
#else SPECIAL_ARITHMETICS
|
|
|
|
/* All preprocessor arithmetic should be done in longs.
|
|
*/
|
|
#define arith long /* dummy */
|
|
|
|
#endif SPECIAL_ARITHMETICS
|
|
|
|
#define arith_size (sizeof(arith))
|
|
#define arith_sign ((arith) 1 << (arith_size * 8 - 1))
|
|
#define max_arith (~arith_sign)
|