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From: Wilhelm.Spickermann@t-online.de (Wilhelm Spickermann)
Newsgroups: comp.lang.ada
Subject: RE: Sign of tanh ???
Date: Sun, 22 Apr 2001 16:56:14 +0200 (CEST)
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Date: 2001-04-22T16:56:14+02:00


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�s the C-library. Gnat uses the C-Library to compute the tanh (if
the result cannot be easily found to be -1.0 1.0 or the argument). Does the
problem occur in C too?

Wilhelm