SFMT in Action: Part II – Object oriented implementation of SIMD-oriented Fast Mersenne Twister (SFMT) in C#

/****************************** Module Header ******************************\
* Module Name :	SfmtC.cs
* Project     :	PrngLib
* Author      : Emre Özgür İnce
* Date        : 08/23/2009
*
* All rights reserved.
\***************************************************************************/

using System;

namespace PrngLib
{
    public class SfmtC : SfmtStrategy
    {

        #region Delegate Functions
        delegate void init_gen_rand(uint seed);
        delegate uint gen_rand32();
        delegate ulong gen_rand64();
        delegate int fill_array32(int[] array, int size);
        delegate int fill_arrayU32(uint[] array, int size);
        delegate int fill_array64(long[] array, int size);
        delegate int fill_arrayU64(ulong[] array, int size);
        #endregion

        #region Fields
        init_gen_rand _initGenRand = null;
        gen_rand32 _genRand32 = null;
        gen_rand64 _genRand64 = null;
        fill_array32 _fillArray32 = null;
        fill_arrayU32 _fillArrayU32 = null;
        fill_array64 _fillArray64 = null;
        fill_arrayU64 _fillArrayU64 = null;
        #endregion

        #region Constructors
        public SfmtC()
        {
            _dllName = "SFMTc";
            _unmanagedLibrary = new UnmanagedLibrary(_dllName);
            _initGenRand = _unmanagedLibrary.GetUnmanagedFunction<init_gen_rand>("init_gen_rand");
            _genRand32 = _unmanagedLibrary.GetUnmanagedFunction<gen_rand32>("gen_rand32");
            _genRand64 = _unmanagedLibrary.GetUnmanagedFunction<gen_rand64>("gen_rand64");
            _fillArray32 = _unmanagedLibrary.GetUnmanagedFunction<fill_array32>("fill_array32");
            _fillArrayU32 = _unmanagedLibrary.GetUnmanagedFunction<fill_arrayU32>("fill_array32");
            _fillArray64 = _unmanagedLibrary.GetUnmanagedFunction<fill_array64>("fill_array64");
            _fillArrayU64 = _unmanagedLibrary.GetUnmanagedFunction<fill_arrayU64>("fill_array64");

        }
        #endregion

        #region Properties
        public override string DllName
        {
            get { return _dllName; }
        }
        #endregion

        #region Methods
        public override void MakeSeed()
        {
            _initGenRand((uint)DateTime.Now.Millisecond);
        }
        
        public override int Generate32BitInt()
        {
            return (int)_genRand32();
        }

        public override bool Generate32BitInt(int[] intArray)
        {
            bool result = false;
            int r = _fillArray32(intArray, intArray.Length); 
            if (r == 1)
                result = true;
            return result;

        }

        public override bool Generate32BitUInt(uint[] intArray)
        {
            bool result = false;
            int r = _fillArrayU32(intArray, intArray.Length);
            if (r == 1)
                result = true;
            return result;

        }

        public override uint Generate32BitUInt()
        {
            return _genRand32();
        }

        public override bool Generate64BitInt(long[] longArray)
        {
            bool result = false;
            int r = _fillArray64(longArray, longArray.Length);
            if  (r == 1)
                result = true;
            return result;
        }

        public override bool Generate64BitUInt(ulong[] longArray)
        {
            bool result = false;
            int r = _fillArrayU64(longArray, longArray.Length);
            if (r == 1)
                result = true;
            return result;
        }

        public override long Generate64BitInt()
        {
            return (long)_genRand64();
        }

        public override ulong Generate64BitUInt()
        {
            return _genRand64();
        }
        #endregion

    }
}