/// <summary>
/// Gets a <see cref="System.TimeSpan"/>
/// </summary>
/// <param name="span">The span to get the percentage of.</param>
/// <param name="percentage">What percent of the full time should be returned.</param>
/// <param name="roundTo">A timespan representing the nearast value the result should round to. Optional.</param>
/// <returns>A timespan that is a percentage of the full time.</returns>
/// <remarks>
/// this is not just calling the <see cref="GetPercentage(STimeSpan, decimal, STimeSpan?)"/>
/// because double and decimal have different precisions.
/// </remarks>
public static STimeSpan GetPercentage(this STimeSpan span, double percentage, STimeSpan?roundTo = null)
{
long totalTicks = span.Ticks;
var result = STimeSpan.FromTicks((long)(totalTicks * percentage));
if (roundTo != null)
{
return(result.RoundToNearest(roundTo.Value));
}
return(result);
}
