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added prime field arithmetic

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Ahmet Inan 2024-03-21 17:16:41 +01:00
commit fbbc655589
2 changed files with 181 additions and 0 deletions
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tests/pf_test.cc Normal file
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/*
Test for the prime field arithmetic
Copyright 2024 Ahmet Inan <inan@aicodix.de>
*/
#include <cstdint>
#include <cassert>
#include <iostream>
#include "prime_field.hh"
template <typename TYPE, TYPE PRIME>
void exhaustive_test()
{
typedef CODE::PrimeField<TYPE, PRIME> PF;
for (TYPE a = 0; a < PRIME; ++a)
for (TYPE b = 0; b < PRIME; ++b)
assert((PF(a) * PF(b))() == (a * b) % PRIME);
for (TYPE a = 1; a < PRIME; ++a)
assert(rcp(PF(a)) * PF(a) == PF(1));
for (TYPE a = 0; a < PRIME; ++a)
for (TYPE b = 0; b < PRIME; ++b)
assert((PF(a) + PF(b))() == (a + b) % PRIME);
for (TYPE a = 0; a < PRIME; ++a)
for (TYPE b = 0; b < PRIME; ++b)
assert((PF(a) - PF(b))() == (a - b + PRIME) % PRIME);
}
int main()
{
exhaustive_test<uint32_t, 257>();
exhaustive_test<uint64_t, 65537>();
std::cerr << "Prime field arithmetic test passed!" << std::endl;
return 0;
}