DSP_ifft16x16
4-31 C64x+ DSPLIB Reference
Implementation Notes
-Bank Conflicts: No bank conflicts occur.
-Interruptibility: The code is interruptible.
-The routine uses log4(nx) − 1 stages of radix-4 transform and performs
either a radix-2 or radix-4 transform on the last stage depending on nx. If
nx is a power of 4, then this last stage is also a radix-4 transform, otherwise
it is a radix-2 transform.
-See the fft16x16 implementation notes, as similar ideas are used.
Benchmarks Cycles (6 * nx/8 + 19) * ceil[log4(nx) − 1] + 8 * nx/8 + 30
Codesize 864 bytes