Developer Guide and Reference

Contents

_mm256_add_epi8/16/32/64

Adds signed/unsigned packed 8/16/32/64-bit integer data elements of two vectors. The corresponding Intel® AVX2 instruction is
VPADDB
,
VPADDW
,
VPADDD
, or
VPADDQ
.

Syntax

extern __m256i _mm256_add_epi8(__m256i s1, __m256i s2);
extern __m256i _mm256_add_epi16(__m256i s1, __m256i s2);
extern __m256i _mm256_add_epi32(__m256i s1, __m256i s2);
extern __m256i _mm256_add_epi64(__m256i s1, __m256i s2);
Arguments
s1
integer source vector used for the operation
s2
integer source vector used for the operation
Description
Adds packed signed/unsigned 8-, 16-, 32-, or 64-bit integers from source vector
s1
and corresponding bits of source vector
s2
and stores the packed integer result in the destination vector. When an individual result is too large to be represented in 8/16/32/64 bits (overflow), the result is wrapped around and the low 8/16/32/64 bits are written to the destination vector (that is, the carry is ignored).
You must control the range of values operated upon to prevent undetected overflow conditions.
Returns
Result of the addition operation.