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From: ark@alice.UucP (Andrew Koenig)
Newsgroups: net.lang.c
Subject: Re: Numeric comparisons
Message-ID: <4263@alice.UUCP>
Date: Tue, 3-Sep-85 14:06:31 EDT
Article-I.D.: alice.4263
Posted: Tue Sep  3 14:06:31 1985
Date-Received: Wed, 4-Sep-85 06:34:34 EDT
References: <797@dataio.UUCP>
Organization: Bell Labs, Murray Hill
Lines: 6

> I disagree. A comparison is a subtract with the result thrown away. The
> trick is to select the correct conditional branch instruction afterwards,
> depending on whether a signed or unsigned comparison was done.

Don't try that trick in floating point, or you'll get spurious
overflow traps when comparing perfectly legitimate numbers.