A double-precision complex Fast Fourier Transform (FFT) C-callable code library has been developed for the Texas Instruments (TI)(tm) TMS320C54x fixed-point digital signal processor (DSP). The library includes routines and the necessary 32-bit coefficients to process both the FFT and the inverse FFT (IFFT) for 32-bit complex-valued input data. The routines can accommodate input data lengths of 8