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Re: Fourth Draft "Unsafe fp optimizations" project description.
- To: ejr at CS dot Berkeley dot EDU
- Subject: Re: Fourth Draft "Unsafe fp optimizations" project description.
- From: kaih at khms dot westfalen dot de (Kai Henningsen)
- Date: 15 Aug 2001 09:32:00 +0200
- cc: gcc at gcc dot gnu dot org
- Comment: Unsolicited commercial mail will incur an US$100 handling fee per received mail.
- Organization: Organisation? Me?! Are you kidding?
- References: <200108130550.WAA23692@lotus.CS.Berkeley.EDU>
ejr@CS.Berkeley.EDU (Jason Riedy) wrote on 12.08.01 in <200108130550.WAA23692@lotus.CS.Berkeley.EDU>:
> For a simpler
> view, does anyone really want to debug programs where
> you cannot rely on equality?
If there's one thing I've seen or heard in just about *every* discussion
of computer floating point, it is that you cannot rely on equality. Just
about every single one makes the point that with floating point, "A == B"
is *wrong*, you want "abs(A-B) < some_small_value".