mlemanczyk/even-perfect-numbers-scanner
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Use LastDigit enum across Mersenne scanners

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Marek Lemańczyk committed 2025-10-26 16:04:05 +01:00
1 parent 43c7bafd5d
commit a83ae56caf
15 files changed
+83 -49
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PerfectNumbers.Core.Tests/MersenneNumberIncrementalGpuTesterTests.cs
+3 -2
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@@ -1,4 +1,5 @@
using FluentAssertions;
using PerfectNumbers.Core;
using PerfectNumbers.Core.Gpu;
using Xunit;
using UInt128 = System.UInt128;
@@ -7,7 +8,7 @@ namespace PerfectNumbers.Core.Tests;
public class MersenneNumberIncrementalGpuTesterTests
{
private static bool LastDigitIsSeven(ulong exponent) => (exponent & 3UL) == 3UL;
private static LastDigit GetLastDigit(ulong exponent) => (exponent & 3UL) == 3UL ? LastDigit.Seven : LastDigit.One;
[Theory(Skip = "Disabled until the GPU incremental cycle heuristics are ported.")]
[InlineData(GpuKernelType.Pow2Mod, false)]
@@ -32,7 +33,7 @@ public class MersenneNumberIncrementalGpuTesterTests
private static void RunCase(MersenneNumberIncrementalGpuTester tester, ulong exponent, ulong maxK, bool expectedPrime)
{
bool isPrime = true;
tester.Scan(exponent, (UInt128)exponent << 1, LastDigitIsSeven(exponent), (UInt128)maxK, ref isPrime);
tester.Scan(exponent, (UInt128)exponent << 1, GetLastDigit(exponent), (UInt128)maxK, ref isPrime);
isPrime.Should().Be(expectedPrime);
}
}