Synopsis
		sflsinterp5d < Fin.rsf axis11=Fax11.rsf axis12=Fax12.rsf axis21=Fax21.rsf axis22=Fax22.rsf > Fout.rsf verb=n niter=100 nouter=5 eps=1.e-2 sn11= sn12= sn21= sn22=

Parameters
		file axis11= auxiliary input file name   file axis12= auxiliary input file name   file axis21= auxiliary input file name   file axis22= auxiliary input file name   float eps=1.e-2 regularization parameter   int niter=100 inner iterations   int nouter=5 outer iterations   int sn11=   int sn12=   int sn21=   int sn22=   bool verb=n [y/n] verbosity