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Inline GpuUInt128 Mul64 helper

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Marek Lemańczyk committed 2025-10-20 13:30:34 +02:00
1 parent 9c08cf48a7
commit 1809ba95b3
8 files changed
+108 -114
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PerfectNumbers.Core.Tests/Gpu/GpuUInt128Tests.cs
-22
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@@ -84,28 +84,6 @@ public class GpuUInt128Tests
}
}
[Fact]
public void MulModBigInteger_matches_UInt128()
{
var random = new Random(13);
for (var i = 0; i < 20; i++)
{
var high1 = ((ulong)random.Next() << 32) | (uint)random.Next();
var low1 = ((ulong)random.Next() << 32) | (uint)random.Next();
var high2 = ((ulong)random.Next() << 32) | (uint)random.Next();
var low2 = ((ulong)random.Next() << 32) | (uint)random.Next();
var modHigh = ((ulong)random.Next() << 32) | (uint)random.Next();
var modLow = ((ulong)random.Next() << 32) | (uint)random.Next() | 1UL;
var modulus = new GpuUInt128(modHigh, modLow);
var a = new GpuUInt128((UInt128)new GpuUInt128(high1, low1) % (UInt128)modulus);
var b = new GpuUInt128((UInt128)new GpuUInt128(high2, low2) % (UInt128)modulus);
var expected = MulModReference((UInt128)a, (UInt128)b, (UInt128)modulus);
var result = new GpuUInt128(a.High, a.Low);
result.MulModBigInteger(b, modulus);
((UInt128)result).Should().Be(expected);
}
}
[Fact]
public void SquareMod_matches_UInt128()
{