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radix 5 works, but is 6x slower than fftw

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This commit is contained in:
Mark Borgerding
2003-11-03 03:03:16 +00:00
parent 85764e6437
commit 3c0c0431e2
5 changed files with 51 additions and 152 deletions
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11
kiss_fft.c
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@ -278,10 +278,11 @@ void bfly5(
Fout4->i = scratch[0].i + scratch[5].i + scratch[6].i + scratch[7].i + scratch[8].i;
++Fout0;++Fout1;++Fout2;++Fout3;++Fout4;
tw1+=m;
tw2+=2*m;
tw3+=3*m;
tw4+=4*m;
tw1+=fstride;
tw2+=2*fstride;
tw3+=3*fstride;
tw4+=4*fstride;
}
}
@ -347,9 +348,7 @@ void fft_work(
case 2: bfly2(Fout,fstride,st,m); break;
case 3: bfly3(Fout,fstride,st,m); break;
case 4: bfly4(Fout,fstride,st,m); break;
#if 1
case 5: bfly5(Fout,fstride,st,m); break;
#endif
default: bfly_generic(Fout,fstride,st,m,p); break;
}
}