Intel® C++ Compiler 16.0 User and Reference Guide
Pack signed word/doubleword integers to signed byte/words integers and saturates. The corresponding Intel® AVX2 instruction is VPACKSSWB or VPACKSSDW.
extern __m256i _mm256_packs_epi16(__m256i a, __m256i b); |
extern __m256i _mm256_packs_epi32(__m256i a, __m256i b); |
a |
integer source vector used for the operation |
b |
integer source vector used for the operation |
The _mm256_packs_epi16 intrinsic converts 16 packed signed word integers from the first and the second source operands into 32 packed signed byte integers. The _mm256_packs_epi32 intrinsic converts eight packed signed doubleword integers from the first and the second source operands into 16 packed signed word integers.
Result of the pack operation.