mlemanczyk/even-perfect-numbers-scanner
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Restore pre-residue mode behavior and tests

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Marek Lemańczyk committed 2025-09-21 04:05:16 +02:00
1 parent 23e8d306b1
commit aa683215b2
8 files changed
+51 -678
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PerfectNumbers.Core.Tests/MersenneNumberResidueCpuTesterTests.cs
-46
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@@ -21,56 +21,10 @@ public class MersenneNumberResidueCpuTesterTests
RunCase(tester, 127UL, 1_000UL, expectedPrime: true);
}
[Fact]
[Trait("Category", "Fast")]
public void Scan_recognizes_all_known_small_mersenne_primes()
{
var tester = new MersenneNumberResidueCpuTester();
foreach (ulong exponent in MersennePrimeTestData.Exponents)
{
RunCase(tester, exponent, 1UL, expectedPrime: true);
}
}
[Theory]
[InlineData(31UL)]
[Trait("Category", "Fast")]
public void Scan_matches_cli_residue_configuration_for_primes(ulong exponent)
{
RunCase(new MersenneNumberResidueCpuTester(), exponent, 32UL, expectedPrime: true);
}
[Theory]
[InlineData(31UL, 1_024UL, 1UL)]
[InlineData(31UL, 512UL, 2UL)]
[InlineData(31UL, 256UL, 4UL)]
[InlineData(127UL, 256UL, 1UL)]
[InlineData(127UL, 128UL, 2UL)]
[InlineData(127UL, 64UL, 4UL)]
[Trait("Category", "Fast")]
public void Scan_handles_multiple_residue_sets_for_known_primes(ulong exponent, ulong perSetLimit, ulong setCount)
{
ulong overallLimit = perSetLimit * setCount;
RunCase(new MersenneNumberResidueCpuTester(), exponent, perSetLimit, setCount, overallLimit, expectedPrime: true);
}
private static void RunCase(MersenneNumberResidueCpuTester tester, ulong exponent, ulong maxK, bool expectedPrime)
{
RunCase(tester, exponent, maxK, 1UL, maxK, expectedPrime);
}
private static void RunCase(
MersenneNumberResidueCpuTester tester,
ulong exponent,
ulong perSetLimit,
ulong setCount,
ulong overallLimit,
bool expectedPrime)
{
bool isPrime = true;
tester.Scan(exponent, (UInt128)exponent << 1, LastDigitIsSeven(exponent), (UInt128)maxK, ref isPrime);
isPrime.Should().Be(expectedPrime);
}
}