src/mem_utils.h


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#pragma once

#include <cstddef>

#include <arm_neon.h>

template<std::size_t S>
void memcpy_1by1(std::byte *dst, const std::byte *src)
{
    for (std::size_t i{0}; i < S; ++i) {
        dst[i] = src[i];
    }
}

using ARRAY_TYPE = uint32_t;
template<std::size_t S>
void memcpy_neon(ARRAY_TYPE *dst, const ARRAY_TYPE *src)
{
    uint32x4_t tmp;

    for (std::size_t i{0}; i < (S / 4); i += 4) {
        tmp = vld1q_u32(src + i);
        vst1q_u32(&dst[i], tmp);
    }
}