I've written an abstract class in C# for the purpose of random number generation from an array of bytes. The .NET class RNGCryptoServiceProvider can be used to generate this array of random bytes, for example.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace FermiSim.Random
{
/// <summary>
/// Represents the abstract base class for a random number generator.
/// </summary>
public abstract class Rng
{
/// <summary>
/// Initializes a new instance of the <see cref="Rng"/> class.
/// </summary>
public Rng()
{
//
}
public Int16 GetInt16(Int16 min, Int16 max)
{
return (Int16)(min + (Int16)(GetDouble() * (max - min)));
}
public Int32 GetInt32(Int32 min, Int32 max)
{
return (Int32)(min + (Int32)(GetDouble() * (max - min)));
}
public Int64 GetInt64(Int64 min, Int64 max)
{
return (Int64)(min + (Int64)(GetDouble() * (max - min)));
}
public UInt16 GetUInt16(UInt16 min, UInt16 max)
{
return (UInt16)(min + (UInt16)(GetDouble() * (max - min)));
}
public UInt32 GetUInt32(UInt32 min, UInt32 max)
{
return (UInt32)(min + (UInt32)(GetDouble() * (max - min)));
}
public UInt64 GetUInt64(UInt64 min, UInt64 max)
{
return (UInt64)(min + (UInt64)(GetDouble() * (max - min)));
}
public Single GetSingle()
{
return (Single)GetUInt64() / UInt64.MaxValue;
}
public Double GetDouble()
{
return (Double)GetUInt64() / UInt64.MaxValue;
}
public Int16 GetInt16()
{
return BitConverter.ToInt16(GetBytes(2), 0);
}
public Int32 GetInt32()
{
return BitConverter.ToInt32(GetBytes(4), 0);
}
public Int64 GetInt64()
{
return BitConverter.ToInt64(GetBytes(8), 0);
}
public UInt16 GetUInt16()
{
return BitConverter.ToUInt16(GetBytes(2), 0);
}
public UInt32 GetUInt32()
{
return BitConverter.ToUInt32(GetBytes(4), 0);
}
public UInt64 GetUInt64()
{
return BitConverter.ToUInt64(GetBytes(8), 0);
}
/// <summary>
/// Generates random bytes of the specified length.
/// </summary>
/// <param name="count">The number of bytes to generate.</param>
/// <returns>The randomly generated bytes.</returns>
public abstract byte[] GetBytes(int count);
}
}
Any suggestions for improvements would be welcome.
