25 lines
1.1 KiB
C#
25 lines
1.1 KiB
C#
using PerfectNumbers.Core.Gpu;
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namespace PerfectNumbers.Core
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{
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public static class UInt128Numbers
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{
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public static readonly UInt128 Two = 2UL;
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public static readonly UInt128 Three = 3UL;
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public static readonly UInt128 Four = 4UL;
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public static readonly UInt128 MaxValueMinusOne = UInt128.MaxValue - UInt128.One;
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public static readonly UInt128 OneHundredTwentySeven = 127UL;
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public static readonly UInt128 OneShiftedLeft64 = UInt128.One << 64;
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public static readonly UInt128 OneShiftedLeft64x2 = Two * OneShiftedLeft64;
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public static readonly UInt128 SixtyFour = 64UL;
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public static readonly GpuUInt128 TwoGpu = new(2UL);
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// TODO: Populate this table from the UInt128 residue benchmarks so GPU kernels can pull precomputed constants
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// without re-deriving them at runtime.
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// TODO: Extend the table with cached Mod3/Mod5 folding constants so both CPU and GPU residue helpers can reuse
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// the benchmarked multiply-high reductions without recomputing them per call.
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}
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}
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