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view fourInv.m @ 1325:1b0f2415237f feature/D2_boundary_opt

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Add variable coefficient boundary-optimized second derivatives.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Sun, 13 Feb 2022 19:32:34 +0100
parents f6ada1719420
children
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function u = ifour(u_hat)
    u_hat = ifftshift(u_hat);
    u = ifft(u_hat);
end