Overload basic operations with base_uint class.

diff --git a/Novacoin/base_uint.cs b/Novacoin/base_uint.cs
index 287be58..c2daad5 100644 (file)
--- a/Novacoin/base_uint.cs
+++ b/Novacoin/base_uint.cs
@@ -1,16 +1,64 @@
-\feffusing System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+\feff/**
+*  Novacoin classes library
+*  Copyright (C) 2015 Alex D. (balthazar.ad@gmail.com)
+
+*  This program is free software: you can redistribute it and/or modify
+*  it under the terms of the GNU Affero General Public License as
+*  published by the Free Software Foundation, either version 3 of the
+*  License, or (at your option) any later version.
+
+*  This program is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU Affero General Public License for more details.
+
+*  You should have received a copy of the GNU Affero General Public License
+*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+using System;
 
 namespace Novacoin
 {
-    public class base_uint
+    public class base_uint : IComparable<base_uint>, IEquatable<base_uint>
     {
-        protected uint nWidth;
+        protected int nWidth;
         protected uint[] pn;
 
+        public double getDouble()
+        {
+            double ret = 0.0;
+            double fact = 1.0;
+
+            for (int i = 0; i < nWidth; i++)
+            {
+                ret += fact * pn[i];
+                fact *= 4294967296.0;
+            }
+
+            return ret;
+        }
+
+        public ulong GetLow64()
+        {
+            return pn[0] | (ulong)pn[1] << 32;
+        }
+
+        public uint GetLow32()
+        {
+            return pn[0];
+        }
+
+        public int Size
+        {
+            get
+            {
+                return nWidth;
+            }
+        }
+
+
         public static bool operator !(base_uint a)
         {
             for (int i = 0; i < a.nWidth; i++)
@@ -44,9 +92,9 @@ namespace Novacoin
             return ret;
         }
 
+
         public static base_uint operator ++(base_uint a)
         {
-            // prefix operator
             int i = 0;
             while (++a.pn[i] == 0 && i < a.nWidth - 1)
             {
@@ -57,7 +105,6 @@ namespace Novacoin
 
         public static base_uint operator --(base_uint a)
         {
-            // prefix operator
             int i = 0;
             while (--a.pn[i] == uint.MaxValue && i < a.nWidth - 1)
             {
@@ -68,13 +115,13 @@ namespace Novacoin
 
         public static base_uint operator ^(base_uint a, base_uint b)
         {
-            var c = new base_uint();
-            c.pn = new uint[a.nWidth];
-            for (int i = 0; i < c.nWidth; i++)
+            var result = new base_uint();
+            result.pn = new uint[a.nWidth];
+            for (int i = 0; i < result.nWidth; i++)
             {
-                c.pn[i] = a.pn[i] ^ b.pn[i];
+                result.pn[i] = a.pn[i] ^ b.pn[i];
             }
-            return c;
+            return result;
         }
 
         public static base_uint operator +(base_uint a, base_uint b)
@@ -90,7 +137,215 @@ namespace Novacoin
             return result;
         }
 
+        public static base_uint operator -(base_uint a, base_uint b)
+        {
+            return a + (-b);
+        }
 
+        public static base_uint operator &(base_uint a, base_uint b)
+        {
+            var result = new base_uint();
+            result.pn = new uint[a.nWidth];
+            for (int i = 0; i < result.nWidth; i++)
+            {
+                result.pn[i] = a.pn[i] & b.pn[i];
+            }
+            return result;
+        }
 
+        public static base_uint operator |(base_uint a, base_uint b)
+        {
+            var result = new base_uint();
+            result.pn = new uint[a.nWidth];
+            for (int i = 0; i < result.nWidth; i++)
+            {
+                result.pn[i] = a.pn[i] | b.pn[i];
+            }
+            return result;
+        }
+
+        public static bool operator <(base_uint a, base_uint b)
+        {
+            for (int i = a.nWidth - 1; i >= 0; i--)
+            {
+                if (a.pn[i] < b.pn[i])
+                {
+                    return true;
+                }
+                else if (a.pn[i] > b.pn[i])
+                {
+                    return false;
+                }
+            }
+            return false;
+        }
+
+        public static bool operator <=(base_uint a, base_uint b)
+        {
+            for (int i = a.nWidth - 1; i >= 0; i--)
+            {
+                if (a.pn[i] < b.pn[i])
+                {
+                    return true;
+                }
+                else if (a.pn[i] > b.pn[i])
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        public static bool operator >(base_uint a, base_uint b)
+        {
+            for (int i = a.nWidth - 1; i >= 0; i--)
+            {
+                if (a.pn[i] > b.pn[i])
+                {
+                    return true;
+                }
+                else if (a.pn[i] < b.pn[i])
+                {
+                    return false;
+                }
+            }
+            return false;
+        }
+
+        public static bool operator >=(base_uint a, base_uint b)
+        {
+            for (int i = a.nWidth - 1; i >= 0; i--)
+            {
+                if (a.pn[i] > b.pn[i])
+                {
+                    return true;
+                }
+                else if (a.pn[i] < b.pn[i])
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        public static bool operator ==(base_uint a, base_uint b)
+        {
+            if (object.ReferenceEquals(a, b))
+            {
+                return true;
+            }
+
+            for (int i = 0; i < a.nWidth; i++)
+            {
+                if (a.pn[i] != b.pn[i])
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        public static bool operator ==(base_uint a, ulong b)
+        {
+            if (a.pn[0] != (uint)b)
+            {
+                return false;
+            }
+            if (a.pn[1] != (uint)(b >> 32))
+            {
+                return false;
+            }
+            for (int i = 2; i < a.nWidth; i++)
+            {
+                if (a.pn[i] != 0)
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        public static bool operator !=(base_uint a, base_uint b)
+        {
+            return (!(a == b));
+        }
+
+        public static bool operator !=(base_uint a, ulong b)
+        {
+            return (!(a == b));
+        }
+
+        public static bool operator true(base_uint a)
+        {
+            return (a != 0);
+        }
+
+        public static bool operator false(base_uint a)
+        {
+            return (a == 0);
+        }
+
+        public static implicit operator byte[] (base_uint a)
+        {
+            var result = new byte[a.nWidth];
+            for (int i = 0; i < a.nWidth; i++)
+            {
+                Buffer.BlockCopy(BitConverter.GetBytes(a.pn[i]), 0, result, 4 * i, 4);
+            }
+            return result;
+        }
+
+        private static bool ArraysEqual(uint[] a, uint[] b)
+        {
+            if (a.Length != b.Length)
+            {
+                return false;
+            }
+            for (int i = 0; i < a.Length; i++)
+            {
+                if (a[i] != b[i])
+                {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        public override int GetHashCode()
+        {
+            int hash = 17;
+            unchecked
+            {
+                foreach (var element in pn)
+                {
+                    hash = hash * 31 + element.GetHashCode();
+                }
+            }
+            return hash;
+        }
+
+        public int CompareTo(base_uint item)
+        {
+            if (this > item)
+            {
+                return 1;
+            }
+            else if (this < item)
+            {
+                return -1;
+            }
+
+            return 0;
+        }
+
+        public bool Equals(base_uint a)
+        {
+            if (a == null)
+            {
+                return false;
+            }
+
+            return ArraysEqual(pn, a.pn);
+        }
     }
 }