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./bm_kiss_float -x 40000 -n 1800

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from
cputime=5.840
to
cputime=5.830
 (yeah yeah, I know its not great)
This commit is contained in:
Mark Borgerding 2004-02-03 01:37:19 +00:00
parent f95bd02866
commit 26ce35083d
1 changed files with 6 additions and 10 deletions
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16
kiss_fft.c
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@ -251,24 +251,20 @@ void kf_work(
) )
{ {
kiss_fft_cpx * Fout_beg=Fout; kiss_fft_cpx * Fout_beg=Fout;
kiss_fft_cpx * Fout_end; const int p=*factors++; /* the radix */
int m,p; const int m=*factors++; /* stage's fft length/p */
const kiss_fft_cpx * Fout_end = Fout + p*m;
p=*factors++; /* the radix */
m=*factors++; /* stage's fft length/p */
Fout_end = Fout + p*m;
if (m==1) { if (m==1) {
do{ do{
*Fout++ = *f; *Fout = *f;
f += fstride*in_stride; f += fstride*in_stride;
}while(Fout != Fout_end ); }while(++Fout != Fout_end );
}else{ }else{
do{ do{
kf_work( Fout , f, fstride*p, in_stride, factors,st); kf_work( Fout , f, fstride*p, in_stride, factors,st);
f += fstride*in_stride; f += fstride*in_stride;
Fout += m; }while( (Fout += m) != Fout_end );
}while(Fout != Fout_end );
} }
Fout=Fout_beg; Fout=Fout_beg;