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From: BLARSON@ecld.#eclnet
Newsgroups: net.lang.c
Subject: Re: New operator: /*
Message-ID: <12859@sri-arpa.UUCP>
Date: Sun, 26-Aug-84 20:10:31 EDT
Article-I.D.: sri-arpa.12859
Posted: Sun Aug 26 20:10:31 1984
Date-Received: Thu, 30-Aug-84 19:59:05 EDT
Lines: 26

From:  Bob Larson <BLARSON@ecld.#eclnet>

There is no need for a temporary:

d=((long)(a*b))/c;

of course, both this and your example have the disadvantage of the conversion
to long is done AFTER the multiply.  Better would be:

d= (long)a*b/c;

where all computation is done in long.

Best would be to specify optional (to compiler writer) optimization 
algorythms:

Multiplying two ints resulting in long should use special opcode to do this
where practical.

Dividing a long by an int resulting in int should use special opcode where
practical.

Obviously this should also apply to int/short and short/char where applicable.

Bob Larson <Blarson@Usc-Ecl.arpa>
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