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59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*
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Test for the short BCH codes decoder
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Copyright 2020 Ahmet Inan <inan@aicodix.de>
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*/
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#include <cassert>
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#include <random>
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#include <iostream>
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#include <functional>
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#include "short_bch_code_decoder.hh"
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int main()
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{
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std::random_device rd;
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std::default_random_engine generator(rd());
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if (1) {
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// Perfect binary Golay code using x^11+x^9+x^7+x^6+x^5+x+1
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const int N = 23, K = 12, T = 3, POLY = 0b101011100011;
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CODE::ShortBCHCodeDecoder<N, K, POLY, T> decode;
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int target = 0b10101101101111011111001;
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int damaged = target;
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typedef std::uniform_int_distribution<int> distribution;
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auto epos = std::bind(distribution(0, N-1), generator);
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for (int i = 0; i < T; ++i)
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damaged ^= 1 << epos();
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int recovered = decode(damaged);
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assert(recovered == target);
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}
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if (1) {
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// Perfect binary Golay code using x^11+x^10+x^6+x^5+x^4+x^2+1
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const int N = 23, K = 12, T = 3, POLY = 0b110001110101;
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CODE::ShortBCHCodeDecoder<N, K, POLY, T> decode;
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int target = 0b10101101101100100010101;
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int damaged = target;
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typedef std::uniform_int_distribution<int> distribution;
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auto epos = std::bind(distribution(0, N-1), generator);
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for (int i = 0; i < T; ++i)
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damaged ^= 1 << epos();
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int recovered = decode(damaged);
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assert(recovered == target);
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}
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if (1) {
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// NASA INTRO BCH(15, 5) T=3
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const int N = 15, K = 5, T = 3, POLY = 0b10100110111;
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CODE::ShortBCHCodeDecoder<N, K, POLY, T> decode;
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int target = 0b110010001111010;
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int damaged = target;
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typedef std::uniform_int_distribution<int> distribution;
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auto epos = std::bind(distribution(0, N-1), generator);
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for (int i = 0; i < T; ++i)
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damaged ^= 1 << epos();
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int recovered = decode(damaged);
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assert(recovered == target);
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}
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std::cerr << "Short BCH code decoder test passed!" << std::endl;
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return 0;
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}
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