diff options
Diffstat (limited to 'sbc/sbc.c')
| -rw-r--r-- | sbc/sbc.c | 17 |
1 files changed, 5 insertions, 12 deletions
@@ -793,19 +793,12 @@ static inline void _sbc_analyze_four(const int32_t *in, int32_t *out) MULA(res, _anamatrix4[3], t[7]); out[3] = SCALE4_STAGE2(res); #else - /* some of these multiplies could be factored more but something overflows */ - /* eg replace the first two lines with MUL(s[0], _anamatrix4[0], t[0] + t[4]) */ - MUL(s[0], _anamatrix4[0], t[0]); - MULA(s[0], _anamatrix4[0], t[4]); + MUL(s[0], _anamatrix4[0], t[0] + t[4]); MUL(s[1], _anamatrix4[2], t[2]); - MUL(s[2], _anamatrix4[1], t[1]); - MULA(s[2], _anamatrix4[1], t[3]); - MULA(s[2], _anamatrix4[3], t[5]); - MULA(s[2], -_anamatrix4[3], t[7]); - MUL(s[3], _anamatrix4[3], t[1]); - MULA(s[3], _anamatrix4[3], t[3]); - MULA(s[3], -_anamatrix4[1], t[5]); - MULA(s[3], _anamatrix4[1], t[7]); + MUL(s[2], _anamatrix4[1], t[1] + t[3]); + MULA(s[2], _anamatrix4[3], t[5] + t[7]); + MUL(s[3], _anamatrix4[3], t[1] + t[3]); + MULA(s[3], _anamatrix4[1], - t[5] + t[7]); out[0] = SCALE4_STAGE2( s[0] + s[1] + s[2]); out[1] = SCALE4_STAGE2(-s[0] + s[1] + s[3]); out[2] = SCALE4_STAGE2(-s[0] + s[1] - s[3]); |