cJdag()

function out=cJdag(in)

Input:

• in: $N_s$ sets of $d=3$ dimensional data, stored as an $\prod S_k\,\times\,N_s$ matrix

Global variables:

• gbl_S: dimensions of $d=3$ dimensional data sets

Output:

• out: Hermitian conjugate of cJ operator applied to in

Produce a function of the above prototype in the file ``cJdag.m''.
Hint: Again, the only difference between your codes for cJ and cJdag should be the sign of i in the call to fftw.