mlemanczyk/even-perfect-numbers-scanner
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DivisorSet.BitContradiction mode added to --mersenne=bydivisor.

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mlemanczyk committed 2026-01-04 17:59:02 +01:00
1 parent 6a924f4041
commit 45e3455ff3
11 files changed
+1133 -28
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EvenPerfectBitScanner/CliArguments.cs
+23 -18
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@@ -13,6 +13,7 @@ namespace EvenPerfectBitScanner;
Percentile,
Additive,
TopDown,
BitContradiction,
}
internal readonly struct CliArguments
@@ -330,23 +331,27 @@ namespace EvenPerfectBitScanner;
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.Predictive;
}
else if (value.Equals("percentile", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.Percentile;
}
else if (value.Equals("additive", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.Additive;
}
else if (value.Equals("topdown", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.TopDown;
}
else
{
Console.WriteLine("Invalid value for --bydivisor-k-increment. Use sequential, pow2groups, predictive, percentile, additive, or topdown.");
return default;
}
else if (value.Equals("percentile", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.Percentile;
}
else if (value.Equals("additive", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.Additive;
}
else if (value.Equals("topdown", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.TopDown;
}
else if (value.Equals("bitcontradiction", StringComparison.OrdinalIgnoreCase))
{
byDivisorKIncrementMode = ByDivisorKIncrementMode.BitContradiction;
}
else
{
Console.WriteLine("Invalid value for --bydivisor-k-increment. Use sequential, pow2groups, predictive, percentile, additive, topdown, or bitcontradiction.");
return default;
}
continue;
}
@@ -710,7 +715,7 @@ namespace EvenPerfectBitScanner;
Console.WriteLine(" --increment=bit|add exponent increment method (default add)");
Console.WriteLine(" --threads=<value> number of worker threads");
Console.WriteLine(" --mersenne=pow2mod|incremental|lucas|residue|divisor|bydivisor Mersenne test method");
Console.WriteLine(" --bydivisor-k-increment=sequential|pow2groups|predictive|percentile|additive|topdown k iteration strategy for --mersenne=bydivisor (default sequential)");
Console.WriteLine(" --bydivisor-k-increment=sequential|pow2groups|predictive|percentile|additive|topdown|bitcontradiction k iteration strategy for --mersenne=bydivisor (default sequential)");
Console.WriteLine(" --bydivisor-special-range=<n> widen pow2groups special values to +/- n percent (default 0 = points)");
Console.WriteLine(" --max-k=<value> max k for Mersenne tests (q = 2*p*k + 1), including --mersenne=bydivisor");
Console.WriteLine(" --mersenne-device=cpu|gpu|hybrid Device for Mersenne method (default gpu)");