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Re: Calling sqrt() in a dynamic function

From: David Bateman
Subject: Re: Calling sqrt() in a dynamic function
Date: Tue, 10 Feb 2004 21:49:41 +0100
User-agent: Mutt/1.4.1i

According to Thomas Weber <address@hidden> (on 02/10/04):
> Hi, 
> is there a way to call sqrt(X) (X a real matrix) from an .oct-file
> without using feval?
> I've grepped through the sources, but I am unable to find the definition
> of sqrt() for matrix arguments.

There isn't a def'n. Its a mapper function, see How to use it
though that's another question. In fact using it will probably be so esoteric
you'd be better with something like

  NDArray m = args(0).array_value();
  for (int i=0; i < m.numel (); i++)
    m(i) = sqrt (m(i));

Which is also good for N-D arrays..


David Bateman                                address@hidden
Motorola CRM                                 +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 1 69 35 77 01 (Fax) 
91193 Gif-Sur-Yvette FRANCE

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