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fixed alignment issue with SIMD

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This commit is contained in:
Mark Borgerding 2011-03-26 21:25:10 -04:00
parent dda1d91086
commit e2baa5e270
1 changed files with 8 additions and 0 deletions
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8
tools/kfc.c
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@ -42,10 +42,18 @@ static kiss_fft_cfg find_cached_fft(int nfft,int inverse)
if (cur== NULL) {
/* no cached node found, need to create a new one*/
kiss_fft_alloc(nfft,inverse,0,&len);
#ifdef USE_SIMD
int padding = (16-sizeof(struct cached_fft)) & 15;
// make sure the cfg aligns on a 16 byte boundary
len += padding;
#endif
cur = (kfc_cfg)KISS_FFT_MALLOC((sizeof(struct cached_fft) + len ));
if (cur == NULL)
return NULL;
cur->cfg = (kiss_fft_cfg)(cur+1);
#ifdef USE_SIMD
cur->cfg = (kiss_fft_cfg) ((char*)(cur+1)+padding);
#endif
kiss_fft_alloc(nfft,inverse,cur->cfg,&len);
cur->nfft=nfft;
cur->inverse=inverse;