Yes, exactly.

Actually the package FFTConvolution call fftconv2 (https://github.com/jeremyfix/FFTConvolution)

In convolution_benchmark.cc

feval ("fftconv2", functionArguments, 1);

but, I get

error: feval: function 'fftconv2' not found

I do not know how to call the octave function from a c++ program.

It is because a library si not linked?

The author of the package (jeremy.fix) did not answer to my request.

===========================================================================
Patrick DUPRÉ | | email: pdupre@gmx.com
Laboratoire interdisciplinaire Carnot de Bourgogne
9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
Tel: +33 (0)380395988 | | Room# D114A
===========================================================================

Sent: Tuesday, January 18, 2022 at 9:33 PM
From: "George N. White III" <gnwiii@gmail.com>
To: "Community support for Fedora users" <users@lists.fedoraproject.org>
Subject: Re: fttconv2

On Mon, 17 Jan 2022 at 17:59, Patrick Dupre <pdupre@gmx.com> wrote:

Hello,

I get the following error:

error: feval: function 'fftconv2' not found

octave-image provide fftconv2.m

can I use it? If yes, How?

Are you trying to use octave's fftconv2 function? In Fedora35 with octave and octave-image installed using dnf:

octave:8> pkg load image

pkg load image

octave:9> help fftconv2

help fftconv2

'fftconv2' is a function from the file /usr/share/octave/packages/image-2.12.0/fftconv2.m

-- Function File: fftconv2 (A, B)

-- Function File: fftconv2 (V1, V2, A)

-- Function File: fftconv2 (..., SHAPE)

Convolve 2 dimensional signals using the FFT.

This method is faster but less accurate than CONV2 for large A and

B. It also uses more memory. A small complex component will be

introduced even if both A and B are real.

See also: conv2, fftconv, fft, ifft.

George N. White III

_______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-leave@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure