Mega Code Archive
Rounds val to the nearest fractional value
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//http://isotopescreencapture.codeplex.com/
//The MIT License (MIT)
namespace Isotope.Math
{
public static class MathUtil
{
public static double Round(double val, double snap_val)
{
return Round(val, System.MidpointRounding.AwayFromZero, snap_val);
}
/// <summary>
/// rounds val to the nearest fractional value
/// </summary>
/// <param name="val">the value tp round</param>
/// <param name="rounding">what kind of rounding</param>
/// <param name="frac"> round to this value (must be greater than 0.0)</param>
/// <returns>the rounded value</returns>
public static double Round(double val, System.MidpointRounding rounding, double frac)
{
/*
if (frac <= 0)
{
throw new ArgumentOutOfRangeException("frac","must be greater than or equal to 0.0");
}*/
double retval = System.Math.Round((val/frac), rounding)*frac;
return retval;
}
public static double RoundUp(double v, double amount)
{
const System.MidpointRounding rounding = System.MidpointRounding.ToEven;
var result = Round(v + (amount/2.0), rounding, amount);
return result;
}
}
}
]]>