# _mm256_movemask_epi8

Moves byte mask from source vector. The corresponding Intel® AVX2 instruction is VPMOVMSKB.

## Syntax

extern int _mm256_movemask_epi8(__m256i s1);

## Arguments

s1 | integer source vector used for the operation.

## Description

Creates a mask from the most significant bit of each byte of source vector s1 and stores the result in the in the returned doubleword value/mask.

## Returns

Result of the move mask operation.

Parent topic: Intrinsics for Miscellaneous Operations