/// <summary>
/// Returns the fractional part of the number.
/// </summary>
/// <typeparam name="T">The type of numbers for the calculator.</typeparam>
/// <param name="calculator">The calling calculator object.</param>
/// <param name="num">The number which fractional part is to be returned.</param>
/// <returns>The fractional part of the number.</returns>
public static T fracPart <T>(this ICalc <T> calculator, T num)
{
return(calculator.dif(num, calculator.intPart(num)));
}
