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Utilites.cs

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+using SMath.Manager;
+using SMath.Math.Numeric;
+using System;
+using System.Collections.Generic;
+
+namespace MatrixExtensions
+{ 
+   static class Utilites
+   {
+      internal static string[] EntryMatrix2ArrStr(Entry matrix)
+      {
+         string source = matrix.ToString();
+         source = source.Trim(new char[] { 'm', 'a', 't', '(', ')' });
+         return source.Split(',');
+      }
+
+      internal static string[] EntryMatrix2ArrStr(BaseEntry matrix)
+      {
+         string source = matrix.ToString();
+         source = source.Trim(new char[] { 'm', 'a', 't', '(', ')' });
+         return source.Split(',');
+      }
+
+      internal static double[] EntryVec2Arr(Entry vector)
+      {
+         string source = vector.ToString();
+         source = source.Trim(new char[] { 'm', 'a', 't', '(', ')' });
+         //source = source.Replace("{", "");
+         //source = source.Replace("}", "");
+         string[] src = source.Split(',');
+
+         int n = src.Length - 2;
+         double[] res = new double[n];
+         for (int i = 0; i < n; i++)
+         {
+            if (src[i].IndexOf('^') >= 0) res[i] = 0;
+            else res[i] = Convert.ToDouble(src[i]);
+         }
+         
+         return res;
+      }
+
+      internal static double Entry2Double(Entry prime)
+      {
+         string source = prime.ToString();
+         return Convert.ToDouble(source);
+      }
+
+      internal static int Entry2Int(Entry prime)
+      {
+         string source = prime.ToString();
+         return Convert.ToInt32(source);
+      }
+   }
+}