view fourInv.m @ 1160:76e3bb7836cf feature/rv

First attempt at multi-grid calculation of the residual
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Tue, 25 Jun 2019 16:52:54 +0200
parents f6ada1719420
children
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function u = ifour(u_hat)
    u_hat = ifftshift(u_hat);
    u = ifft(u_hat);
end