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Fix alignment warning when building with -Wcast-align

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When building with -Wcast-align, we get a warning because the
alignment of st->substate is not known by kiss_fftr_alloc() so shift
the data around so that we don't need to care about the alignment for
st->substate.

Signed-off-by: Ricard Wanderlof <ricardw@axis.com>
This commit is contained in:
Ricard Wanderlöf
2020-04-22 12:00:09 +02:00
committed by Ricard Wanderlof
parent cf5813a1b4
commit 31018eaea6
1 changed files with 5 additions and 3 deletions
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8
tools/kiss_fftr.c
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@ -33,6 +33,8 @@ kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem,size_t * lenme
nfft >>= 1; nfft >>= 1;
kiss_fft_alloc (nfft, inverse_fft, NULL, &subsize); kiss_fft_alloc (nfft, inverse_fft, NULL, &subsize);
/* nfft kiss_fft_cpx'es for the tmpbuf; half as many for the
* super_twiddles */
memneeded = sizeof(struct kiss_fftr_state) + subsize + sizeof(kiss_fft_cpx) * ( nfft * 3 / 2); memneeded = sizeof(struct kiss_fftr_state) + subsize + sizeof(kiss_fft_cpx) * ( nfft * 3 / 2);
if (lenmem == NULL) { if (lenmem == NULL) {
@ -45,9 +47,9 @@ kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem,size_t * lenme
if (!st) if (!st)
return NULL; return NULL;
st->substate = (kiss_fft_cfg) (st + 1); /*just beyond kiss_fftr_state struct */ st->tmpbuf = (kiss_fft_cpx *) (st + 1); /*just beyond kiss_fftr_state struct */
st->tmpbuf = (kiss_fft_cpx *) (((char *) st->substate) + subsize); st->super_twiddles = st->tmpbuf + nfft; /*just beyond tmpbuf */
st->super_twiddles = st->tmpbuf + nfft; st->substate = (kiss_fft_cfg) (st->tmpbuf + nfft * 3 / 2); /*just beyond super_twiddles */
kiss_fft_alloc(nfft, inverse_fft, st->substate, &subsize); kiss_fft_alloc(nfft, inverse_fft, st->substate, &subsize);
for (i = 0; i < nfft/2; ++i) { for (i = 0; i < nfft/2; ++i) {