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added simd capability

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This commit is contained in:
Mark Borgerding
2005-06-24 03:03:31 +00:00
parent 24be1c5850
commit 7f6cbeab2e
10 changed files with 112 additions and 9 deletions
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9
kiss_fft.c
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@ -129,8 +129,13 @@ static void kf_bfly3(
tw1 += fstride;
tw2 += fstride*2;
#ifdef USE_SIMD
Fout[m].r = Fout->r - scratch[3].r * _mm_set1_ps(.5);
Fout[m].i = Fout->i - scratch[3].i * _mm_set1_ps(.5);
#else
Fout[m].r = Fout->r - scratch[3].r/2;
Fout[m].i = Fout->i - scratch[3].i/2;
#endif
C_MULBYSCALAR( scratch[0] , epi3.i );
@ -326,7 +331,11 @@ kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem
+ sizeof(kiss_fft_cpx)*(nfft-1); /* twiddle factors*/
if ( lenmem==NULL ) {
#ifdef USE_SIMD
st = ( kiss_fft_cfg)memalign( sizeof(kiss_fft_cpx), memneeded );
#else
st = ( kiss_fft_cfg)malloc( memneeded );
#endif
}else{
if (*lenmem >= memneeded)
st = (kiss_fft_cfg)mem;