W elcome to Fintronic USA
About Fintronic USA Main announcements What's new at Fintronic What our customers are saying... Support for SystemC Support for Verilog 2001 Third party tools integrated with FinSim(Specman, Denali, Debussy, Undertow, Vera, VirSim, HDL Score, Comet, Meteor, NelSim, Pivot, DeskPOD, @Designer 2.1)		DSP Designers perform a one million point FFT in Verilog in under 1 second! The example below run in approx 1.67 seconds on an Intel i3 2.3GHz. It performed the sequence VpFft, VpIfft. The two transformations are perfomed in-place on the contents of xformFC, which is of type VpFComplex. VpFComplex indicates a complex number in cartesian coordinates with fields of type real. The parameter SIZE is set to 1024 * 1024 Note that the size of the array upon which VpFft and VpIfft are called must be a power of 2 for the given FFT algorithm to work. module top; parameter SIZE = 1024 * 1024; real d; VpFComplex xformFC [0:SIZE - 1]; VpFComplex origFC [0:SIZE - 1]; initial begin #1; $InitM(xformFC, (($I1==3) ? 7.0 : 0.0), 0.0); $InitM(origFC, (($I1==3) ? 7.0 : 0.0), 0.0); $VpFft(xformFC, 0, SIZE-1); $VpIfft(xformFC, 0, SIZE-1); d = $VpDistAbsMax(xformFC, origFC); $display("maximum error=%e\n", d); end endmodule