# _mm256_packs_epi16/32

Pack signed word/doubleword integers to signed byte/words integers and saturates. The corresponding Intel® AVX2 instruction is VPACKSSWB or VPACKSSDW.

## Syntax

extern __m256i _mm256_packs_epi16(__m256i a, __m256i b);

extern __m256i _mm256_packs_epi32(__m256i a, __m256i b);

## Arguments

a | integer source vector used for the operation
b | integer source vector used for the operation

## Description

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.

## Returns

Result of the pack operation.

Parent topic: Intrinsics for Pack/Unpack Operations