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/// ------------------------------------------------------
/// SwarmOps - Numeric and heuristic optimization for C#
/// Copyright (C) 2003-2011 Magnus Erik Hvass Pedersen.
/// Please see the file license.txt for license details.
/// SwarmOps on the internet: http://www.Hvass-Labs.org/
/// ------------------------------------------------------
using System;
using System.Globalization;
namespace SwarmOps
{
public static partial class Tools
{
private static CultureInfo _cultureInfo = new CultureInfo("en-US");
/// <summary>
/// Convert numeric value d to a string with convenient formatting.
/// </summary>
public static string FormatNumber(double? d)
{
string s;
if (d.HasValue)
{
double dAbs = Math.Abs(d.Value);
if (dAbs < 1e-2)
{
s = String.Format(_cultureInfo, "{0:0.##e0}", d.Value);
}
else if (dAbs > 1e+6)
{
s = String.Format(_cultureInfo, "{0:0.##e+0}", d.Value);
}
else if (dAbs > 1e+3)
{
s = String.Format(_cultureInfo, "{0:0.}", d.Value);
}
else
{
s = String.Format(_cultureInfo, "{0:0.##}", d.Value);
}
}
else
{
s = "--";
}
return s;
}
/// <summary>
/// Convert numeric value d to a percentage string, e.g. d==0.253212
/// returns string "25.32%"
/// </summary>
public static string FormatPercent(double? d)
{
return String.Format(_cultureInfo, "{0:0.##}%", d*100);
}
}
}
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