DSP_fir_cplx_hM4X4
Special Requirements
-The number of coefficients nh must be larger or equal to 4 and a multiple of 4.
-The number of output samples nr must be a multiple of 4.
Implementation Notes
| - Bank Conflicts: No bank conflicts occur. | |
| - Interruptibility: The code is fully interruptible. | |
| - The outer loop is unrolled 4 times while the inner loop is not unrolled. | |
| - Both inner and outer loops are collapsed in one loop. | |
| - ADDAH and SUBAH are used along with PACKH2 to perform | |
| accumulation, shift and data packing. | |
| - Collapsed one stage of epilog and prolog each. | |
Benchmarks | Cycles | nr * nh*9/16 + 40 |
| Codesize | 384 bytes |
C64x+ DSPLIB Reference |
