find the number of decimals needed to represent the value - CSharp System

CSharp examples for System:Decimal

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Description

find the number of decimals needed to represent the value

Demo Code

/* HeuristicLab// w  ww.j av  a 2 s.co m
 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
using System;

public class Main{
    // find the number of decimals needed to represent the value
    private static int Decimals(this double x) {
      if (x.IsAlmost(0) || double.IsInfinity(x) || double.IsNaN(x))
        return 0;

      var v = Math.Abs(x);
      int d = 1;
      while (v < 1) {
        v *= 10;
        d++;
      }
      return d;
    }
    private static bool IsAlmost(this double value, double other, double eps = 1e-12) {
      return Math.Abs(value - other) < eps;
    }
}

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