From bug-request at octave dot org Mon Oct 10 12:15:46 2005
Subject: wrong exp() result on OpenBSD
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: smestdag <Steven dot Mestdagh at esat dot kuleuven dot be>
Cc: bug at octave dot org
Date: Mon, 10 Oct 2005 13:15:39 -0400

On 10-Oct-2005, smestdag wrote:

| To: bug at octave dot org
| Cc: steven dot mestdagh at esat dot kuleuven dot be
| Subject: wrong exp() result on OpenBSD
| 
| Bug report for Octave 2.1.71 configured for i386-unknown-openbsd3.8
| 
| Description:
| -----------
| 
| With octave 2.1.71 on OpenBSD, one of the tests is failing.
| More specifically it turns out that
| 
| exp(-Inf) = NaN
| exp(Inf)  = NaN
| 
| while it is supposed to be
| 
| exp(-Inf) = 0
| exp(Inf)  = Inf
| 
| 
| Repeat-By:
| ---------
| 
| exp(-Inf)
| exp(Inf)

Most likely, this is a problem with your math library, not Octave.

jwe



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