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From: "Bobby D. Bryant" <bdbryant@mail.utexas.edu>
Newsgroups: comp.lang.ada
Subject: Re: Sign of tanh ???
Date: Sun, 22 Apr 2001 13:12:33 +0600
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Wilhelm Spickermann wrote:

> On 21-Apr-01 Bobby D. Bryant wrote:
> > Isn't tanh supposed to preserve the sign of its argument?
>
> Sure. But I get the result
>   0.46212 -0.46212
> and I use the gnat-3.13p-5 rpm (from ALT) too.
>
> Perhaps it=B4s the C-library. Gnat uses the C-Library to compute the ta=
nh (if
> the result cannot be easily found to be -1.0 1.0 or the argument). Does=
 the
> problem occur in C too?

No, it works OK in C.

Odd...

Bobby Bryant
Austin, Texas