- sign = _mm_srai_epi16(quantCoef12, 15);
- quantCoef1 = _mm_unpacklo_epi16(quantCoef12, sign);
- _mm_storeu_si128((__m128i*)(coef + n), quantCoef1);
- quantCoef2 = _mm_unpackhi_epi16(quantCoef12, sign);
- _mm_storeu_si128((__m128i*)(coef + n + 4), quantCoef2);