cs_Hash.h

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/*
 * Author: Crownstone Team
 * Copyright: Crownstone (https://crownstone.rocks)
 * Date: Oct 30, 2019
 * License: LGPLv3+, Apache License 2.0, and/or MIT (triple-licensed)
 */
#pragma once
 
#include <cstddef>
#include <cstdint>
 
uint32_t Fletcher(const uint8_t* const data, const size_t len, uint32_t previousFletcherHash = 0);
 
inline uint16_t Djb2(const uint8_t* data, const uint16_t size) {
    uint16_t hash = 5381;
    for (int i = 0; i < size; ++i) {
        hash = ((hash << 5) + hash) + data[i];
    }
    return hash;
}