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From "Luc Maisonobe (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (MATH-164) Complex - Issue with non-compliance to C99!
Date Wed, 09 Jan 2008 07:32:34 GMT

     [ https://issues.apache.org/jira/browse/MATH-164?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Luc Maisonobe resolved MATH-164.
--------------------------------

    Resolution: Fixed

fixed as of r610288
multiplication involving complex with infinite parts is handled as a special case

> Complex - Issue with non-compliance to C99!
> -------------------------------------------
>
>                 Key: MATH-164
>                 URL: https://issues.apache.org/jira/browse/MATH-164
>             Project: Commons Math
>          Issue Type: Wish
>    Affects Versions: 1.1
>            Reporter: Richard Lyon
>            Priority: Minor
>             Fix For: 1.2
>
>
> Complex z1, z2, z3;
>         
> // assign values to the two complex numbers
> z1 = new Complex(1.0, 0.0);
> z2 = new Complex(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
>        
> // multiply the two complex numbers
> z3 = z1.multiply(z2);
> The result is that both the real and imaginary part of z3 are NaN. Isn't it somewhat
desirable that both parts of the complex should be Infinity?

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