# _mm_i32gather_epi32, _mm256_i32gather_epi32

Gathers 2/4 doubleword values from memory referenced by the given base address, dword indices, and scale. The corresponding Intel® AVX2 instruction is `VPGATHERDD`.

## Syntax

extern __m128i _mm_i32gather_epi32(int const * base, __m128i vindex, const int scale);

extern __m256i _mm256_i32gather_epi32(int const * base, __m256i vindex, const int scale);

## Arguments

base | the base address used to reference the loaded dword elements.
vindex | the vector of dword indices used to reference the loaded dword elements.
scale | The compilation time literal constant, which is used as the vector indices scale to address the loaded elements. Possible values are one of the following: 1, 2, 4, 8.

## Description

The intrinsics load 2/4 doubleword values from memory using the base address, qword indices, and 32-bit scale.

Below is the pseudo-code for the intrinsics:

`_mm_i32gather_epi32()`:

    result[31:0] = mem[base+vindex[31:0]*scale];
    result[63:32] = mem[base+vindex[63:32]*scale];
    result[95:64] = mem[base+vindex[95:64]*scale];
    result127:96] = mem[base+vindex[127:96]*scale];

`_mm256_i32gather_epi32()`:

    result[31:0] = mem[base+vindex[31:0]*scale];
    result[63:32] = mem[base+vindex[63:32]*scale];
    result[95:64] = mem[base+vindex[95:64]*scale];
    result127:96] = mem[base+vindex[127:96]*scale];
    result[159:128] = mem[base+vindex[159:128]*scale];
    result[191:160] = mem[base+vindex[191:160]*scale];
    result[223:192] = mem[base+vindex[223:192]*scale];
    result[255:224] = mem[base+vindex[255:224]*scale];

## Returns

A 128/256-bit vector with unconditionally gathered integer32 values.

Parent topic: Intrinsics for GATHER Operations