Why does the Single Floating Point Variable Streaming Reverse FFT IP produce an incorrect output when the input order is set to Natural? - Why does the Single Floating Point Variable Streaming Reverse FFT IP produce an incorrect output when the input order is set to Natural? Description Due to a problem in the Quartus® Prime Software version 25.3.1 and earlier, the "Natural" option for setting "Input Order" is incorrectly available for selection and unsupported when generating the FFT IP. This option is available when using the following parameters: Direction: "Reverse", Data Flow: "Variable Streaming", Representation: "Single Floating Point". Resolution This problem is scheduled to be fixed in release 26.1 of the Quartus® Prime Software with the removal of the unsupported “Natural” option. Additional Information This problem affects the FFT IP in Quartus® Prime Software versions 17.0 to 25.3.1. Custom Fields values: ['novalue'] Troubleshooting 15018446911 novalue ['DSP/AI Filters/Transforms FFT (Primary)'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 25.3.1 ['Agilex™ 3 FPGAs and SoCs', 'Agilex™ 5 FPGAs and SoCs', 'Agilex™ 7 FPGAs and SoCs', 'Agilex™ 9 FPGA Direct RF-Series', 'Agilex™ 9 FPGAs and SoCs', 'Arria® 10 FPGAs and SoCs', 'Cyclone® 10 GX FPGA', 'Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']