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Re: FFT's and 64-bits


From: David Bateman
Subject: Re: FFT's and 64-bits
Date: Fri, 23 Nov 2007 13:35:50 +0100
User-agent: Thunderbird 1.5.0.7 (X11/20060921)

Fredrik Lingvall wrote:
> David Bateman wrote:
>> Fredrik Lingvall wrote:
>>   
>>> Can one use (large) fft's with --enable-64? From what I can see
>>> fftw 3.2.x is needed (which is only alpha) for 64-bit planner
>>> support: http://www.fftw.org/release-notes.html
>>>
>>> /Fredrik
>>>
>>>     
>> Octave can be built without fftw, with the included fftpack. It'll be
>> slower, but should work with 64-bit..
>>
>> D.
>>   
> This was I while ago, but will building fftw with (gfortran)
>
> FFLAGS = -fdefault-integer-8
>
> work. Otherwise, will --enable-64 break all fft functions when Octave
> is build with fftw support?
>
> /Fredrik
Not sure without trying..

D.

-- 
David Bateman                                address@hidden
Motorola Labs - Paris                        +33 1 69 35 48 04 (Ph) 
Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
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