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polishing SIMD changes

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This commit is contained in:
Mark Borgerding
2005-06-25 04:38:19 +00:00
parent 95fd244f93
commit 4be23bffa4
10 changed files with 75 additions and 69 deletions
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22
tools/kiss_fftr.c
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@ -40,11 +40,7 @@ kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem,size_t * lenme
memneeded = sizeof(struct kiss_fftr_state) + subsize + sizeof(kiss_fft_cpx) * ( nfft * 2);
if (lenmem == NULL) {
#ifdef USE_SIMD
st = (kiss_fftr_cfg) memalign (sizeof(kiss_fft_cpx),memneeded);
#else
st = (kiss_fftr_cfg) malloc (memneeded);
#endif
st = (kiss_fftr_cfg) KISS_FFT_MALLOC (memneeded);
} else {
if (*lenmem >= memneeded)
st = (kiss_fftr_cfg) mem;
@ -109,18 +105,10 @@ void kiss_fftr(kiss_fftr_cfg st,const kiss_fft_scalar *timedata,kiss_fft_cpx *fr
C_MUL( tw , f2k , st->super_twiddles[k]);
C_ADD( freqdata[k] , f1k ,tw);
#ifdef USE_SIMD
freqdata[k].r = (f1k.r + tw.r) * _mm_set1_ps(.5);
freqdata[k].i = (f1k.i + tw.i) * _mm_set1_ps(.5);
freqdata[N-k].r = (f1k.r - tw.r) * _mm_set1_ps(.5);
freqdata[N-k].i = - (f1k.i - tw.i) * _mm_set1_ps(.5);
#else
freqdata[k].r = (f1k.r + tw.r) / 2;
freqdata[k].i = (f1k.i + tw.i) / 2;
freqdata[N-k].r = (f1k.r - tw.r)/2;
freqdata[N-k].i = - (f1k.i - tw.i)/2;
#endif
freqdata[k].r = HALF_OF(f1k.r + tw.r);
freqdata[k].i = HALF_OF(f1k.i + tw.i);
freqdata[N-k].r = HALF_OF(f1k.r - tw.r);
freqdata[N-k].i = HALF_OF(tw.i - f1k.i);
}
CHECK_OVERFLOW_OP(tdc.r ,-, tdc.i);