Date: Sat, 30 Jun 2001 16:31:09 +0300
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
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To: djgpp AT delorie DOT com
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Subject: Re: DJGPP reserves wrong int size
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> From: invalid AT erehwon DOT invalid (Graaagh the Mighty)
> Newsgroups: comp.os.msdos.djgpp
> Date: Sat, 30 Jun 2001 09:06:13 GMT
> 
> On Fri, 29 Jun 2001 10:20:12 +0300, "Eli Zaretskii"
> <eliz AT is DOT elta DOT co DOT il> sat on a tribble, which squeaked:
> 
> >This is usually a sign of a numeric bug in the code.
> 
> No kidding, but in this case it went away when I switched to plain
> doubles universally.

Yes, I understand.  And that precisely is the sign of a numerical bug,
in most cases I've seen.

> Hey, wait a damn minute, the info file said %f for doubles *and* long
> doubles.

No, it says doubles *or* long doubles.

> In any case, the core question remains unanswered: why was some code
> that didn't even use printf broken with long doubles but working with
> plain doubles? All it did was add, multiply, compare, and assign them
> with literals and variables. Not so much as a pointer or a conversion
> involved, and I don't think it even did any division...

Numerical computations are tricky.