Implementation of operator* for uint160 and uint256.

[NovacoinLibrary.git] / Novacoin / uint256.cs

diff --git a/Novacoin/uint256.cs b/Novacoin/uint256.cs
index 317b8d6..4696b4b 100644 (file)
--- a/Novacoin/uint256.cs
+++ b/Novacoin/uint256.cs
@@ -202,7 +202,6 @@ namespace Novacoin
             return ret;
         }
 
-
         public static uint256 operator ++(uint256 a)
         {
             int i = 0;
@@ -251,6 +250,56 @@ namespace Novacoin
         {
             return a - new uint256(b);
         }
+
+        public static uint256 operator /(uint256 a, uint divisor)
+        {
+            var result = new uint256();
+
+            ulong r = 0;
+            int i = a.nWidth;
+
+            while (i-- > 0)
+            {
+                r <<= 32;
+                r |= a.pn[i];
+                result.pn[i] = (uint)(r / divisor);
+                r %= divisor;
+            }
+
+            return result;
+        }
+
+        public static uint256 operator *(uint256 a, uint multiplier)
+        {
+            var result = new uint256();
+
+            ulong c = 0;
+            uint i = 0;
+
+            do
+            {
+                c += a.pn[i] * (ulong)multiplier;
+                result.pn[i] = (uint)c;
+                c >>= 32;
+            } while (++i < result.nWidth);
+
+            return result;
+        }
+
+        public static uint operator %(uint256 a, uint divisor)
+        {
+            ulong r = 0;
+            int i = a.nWidth;
+
+            while (i-- > 0)
+            {
+                r <<= 32;
+                r |= a.pn[i];
+                r %= divisor;
+            }
+
+            return (uint)r;
+        }
         #endregion
 
         #region Shift