Synopsis
		sffft1 < in.rsf > out.rsf inv=n sym=n opt=y

Parameters
		bool inv=n [y/n] if y, perform inverse transform   bool opt=y [y/n] if y, determine optimal size for efficiency   bool sym=n [y/n] if y, apply symmetric scaling to make the FFT operator Hermitian

Used In
		BEI          fdm/kjartjac ft1/ft2d ft1/plane4 ft1/autocor   CWP          geo2006TimeShiftImagingCondition/flat geo2007StereographicImagingCondition/sigsbee2 gpr2007RWEHighOrderKernels/diving gpr2007RWEHighOrderKernels/marm jse2006RWEImagingOverturningReflections/sigsbee seg2006ConvertedWavesTSIC/cwtsic3   DATA          sigsbee/wemig sigsbee/pwemig sigsbee/ptest   GEO384W          hw5/hyper   GEO391          hw3/pocs   GEOSTATS          atten/random atten/vvdata atten/karman atten/karman1 atten/karman2 atten/karmand   JSG          diffr/chan3d diffr/fault pwc/cmp   RSF          rsf/rsftour scons/rsfpy   SEP          fkamo/impresp oc2/elfshot oc2/cup oc2/ocimp velspec/sigvc