42 lines
964 B
C#
42 lines
964 B
C#
using PeterO.Numbers;
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namespace PerfectNumbers.Core;
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public sealed class AlphaCache
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{
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private readonly Dictionary<(EInteger P, int K), AlphaValues> _cache = new();
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public AlphaValues Get(EInteger p, int k)
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{
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if (!_cache.TryGetValue((p, k), out var values))
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{
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ERational alphaPValue = AlphaCalculations.ComputeAlphaP(p, k);
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ERational alphaMValue = RationalNumbers.Two.Divide(alphaPValue);
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values = new AlphaValues(alphaMValue, alphaPValue);
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_cache[(p, k)] = values;
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}
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return values;
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}
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public void Clear()
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{
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_cache.Clear();
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}
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public int Count => _cache.Count;
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public readonly struct AlphaValues
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{
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public readonly ERational AlphaM;
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public readonly ERational AlphaP;
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public AlphaValues(ERational alphaM, ERational alphaP)
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{
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AlphaM = alphaM;
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AlphaP = alphaP;
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}
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}
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}
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