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//
// Mono.Math.Prime.Generator.PrimeGeneratorBase.cs - Abstract Prime Generator
//
// Authors:
// Ben Maurer
//
// Copyright (c) 2003 Ben Maurer. All rights reserved
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
namespace Mono.Math.Prime.Generator {
#if INSIDE_CORLIB
internal
#else
public
#endif
abstract class PrimeGeneratorBase {
public virtual ConfidenceFactor Confidence {
get {
#if DEBUG
return ConfidenceFactor.ExtraLow;
#else
return ConfidenceFactor.Medium;
#endif
}
}
public virtual Prime.PrimalityTest PrimalityTest {
get {
return new Prime.PrimalityTest (PrimalityTests.RabinMillerTest);
}
}
public virtual int TrialDivisionBounds {
get { return 4000; }
}
/// <summary>
/// Performs primality tests on bi, assumes trial division has been done.
/// </summary>
/// <param name="bi">A BigInteger that has been subjected to and passed trial division</param>
/// <returns>False if bi is composite, true if it may be prime.</returns>
/// <remarks>The speed of this method is dependent on Confidence</remarks>
protected bool PostTrialDivisionTests (BigInteger bi)
{
return PrimalityTest (bi, this.Confidence);
}
public abstract BigInteger GenerateNewPrime (int bits);
}
}
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