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/*

Interleavers

Copyright 2023 Ahmet Inan <inan@aicodix.de>

*/

#pragma once

namespace CODE {

template <int SIZE, int ORDER, typename TYPE>

static void Interleave(TYPE *out, const TYPE *in)

{

static_assert(SIZE % ORDER == 0, "ORDER does not divide SIZE");

int LENGTH = SIZE / ORDER;

for (int i = 0; i < LENGTH; ++i)

for (int j = 0; j < ORDER; ++j)

out[ORDER*i+j] = in[i+j*LENGTH];

}

template <int SIZE, int ORDER, typename TYPE>

static void Deinterleave(TYPE *out, const TYPE *in)

{

static_assert(SIZE % ORDER == 0, "ORDER does not divide SIZE");

int LENGTH = SIZE / ORDER;

for (int i = 0; i < LENGTH; ++i)

for (int j = 0; j < ORDER; ++j)

out[i+j*LENGTH] = in[ORDER*i+j];

}

}