测试报告中:128个点的FFT结果是786cycles,256个点的FFT结果是1451个cycles.
DSPF_sp_fftSPxSP_66_LE_ELF_c66-LE-ELF-CGT:7.2.4 | 1 | (TCI6608-DevFuncSim-LE) | 4.2.3.00004 | Passed | " 786 (N=128) 1451 (N=256) |
自测结果:128个点的FFT结果是12465cycles,256个点的FFT结果是26151个cycles.
[TMS320C66x_0] DSPF_sp_fftSPxSP Iter#: 5 Intrinsic Successful SA Successful N = 128 radix = 2 natC: 59883 optC: 35815 SA: 12465
[TMS320C66x_0] DSPF_sp_fftSPxSP Iter#: 6 Intrinsic Successful SA Successful N = 256 radix = 4 natC: 114442 optC: 74903 SA: 26151
是我测试的方法不对,还是我对这个结果理解得不对?