/// <summary>
/// Change the measurement units of a measured quantity
/// </summary>
/// <param name="quantity">The measured quantity</param>
/// <typeparam name="U1">The original type</typeparam>
/// <typeparam name="U2">The new type</typeparam>
/// <typeparam name="T">The type of the value</typeparam>
/// <returns>Quantity in the new units</returns>
public static Quantity <T, U2> Cast <T, U1, U2> (this BaseQuantity <T, U1> quantity) where U1 : IUnit where U2 : IUnit
{
return(new Quantity <T, U2> (quantity.Value));
}
/// <summary>
/// Write a quantity to string while rounding the quantity to the given number of decimal places
/// </summary>
/// <param name="quanta">quantity</param>
/// <param name="decimals">number of decimals to keep</param>
/// <returns>string quantity with units</returns>
public static string ToString <T, U>(this BaseQuantity <T, U> quanta, int decimals) where U : IUnit where T : IConvertible
{
return
((quanta.Value != null ? Math.Round(Convert.ToDouble(quanta.Value), decimals).ToString() : string.Empty) +
(string)(quanta.Units?.GetProperty("Symbol")?.GetValue(null) ?? string.Empty));
}
/// <summary>
/// Subtract two quantities as the specified type
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="quantity2">second quantity</param>
/// <typeparam name="T">input type</typeparam>
/// <typeparam name="R">return type</typeparam>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>sum of two quantities with the same units of measure.</returns>
public static Quantity <R, U> Sub <R, T, U> (this BaseQuantity <T, U> quantity1, BaseQuantity <T, U> quantity2) where U : IUnit where T : ISubtractable <R, T>
{
return(new Quantity <R, U>(quantity1.Value.Sub(quantity2.Value)));
}
/// <summary>
/// Multiply two quantities as doubles
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="quantity2">second quantity</param>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>product of two quantity values with the same units of measure.</returns>
public static Quantity <double, U> MulValues <T, U>(this BaseQuantity <T, U> quantity1, BaseQuantity <T, U> quantity2) where U : IUnit where T : IConvertible
{
return(new Quantity <double, U>(Convert.ToDouble(quantity1.Value) * Convert.ToDouble(quantity2.Value)));
}
/// <summary>
/// Negate a quantity
/// </summary>
/// <param name="quantity1">quantity to negate</param>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>quantity with its value negated</returns>
public static Quantity <R, U> Negate <R, T, U>(this BaseQuantity <T, U> quantity1) where U : IUnit where T : INegateable <R>
{
return(new Quantity <R, U>(quantity1.Value.Negate()));
}
/// <summary>
/// Add two quantities as the specified type
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="quantity2">second quantity</param>
/// <typeparam name="T">input type</typeparam>
/// <typeparam name="R">return type</typeparam>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>sum of two quantities with the same units of measure.</returns>
public static Quantity <R, U> Add <R, T, U> (this BaseQuantity <T, U> quantity1, BaseQuantity <T, U> quantity2) where U : IUnit where T : IAddable <R, T>
{
return(new Quantity <R, U>(quantity1.Value.Add(quantity2.Value)));
}
/// <summary>
/// Map the value in a quantity to another value
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="fn">mapping function</param>
/// <typeparam name="U">units of measure</typeparam>
/// <typeparam name="T1">original stored type</typeparam>
/// <typeparam name="T2">new stored type</typeparam>
/// <returns>quantities with the same units of measure but the value is a different type.</returns>
public static Quantity <T2, U> Map <T1, T2, U>(this BaseQuantity <T1, U> quantity1, Func <T1, T2> fn) where U : IUnit
{
return(new Quantity <T2, U>(fn.Invoke(quantity1.Value)));
}
/// <summary>
/// Divide two quantities as the specified type
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="quantity2">second quantity</param>
/// <typeparam name="T">input type</typeparam>
/// <typeparam name="R">return type</typeparam>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>division of two quantities. Units will cancel.</returns>
public static R Div <R, T, U> (this BaseQuantity <T, U> quantity1, BaseQuantity <T, U> quantity2) where U : IUnit where T : IDivisible <R, T>
{
return(quantity1.Value.Div(quantity2.Value));
}
/// <summary>
/// Divide two quantities as doubles
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="quantity2">second quantity</param>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>division of two quantities. Units will cancel.</returns>
public static double Div <T, U>(this BaseQuantity <T, U> quantity1, BaseQuantity <T, U> quantity2) where U : IUnit where T : IConvertible
{
return(Convert.ToDouble(quantity1.Value) / Convert.ToDouble(quantity2.Value));
}
/// <summary>
/// Negate a quantity
/// </summary>
/// <param name="quantity1">quantity to negate</param>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>quantity with its value negated</returns>
public static Quantity <double, U> Negate <T, U>(this BaseQuantity <T, U> quantity1) where U : IUnit where T : IConvertible
{
return(new Quantity <double, U>(-Convert.ToDouble(quantity1.Value)));
}
/// <summary>
/// Multiply two quantities as the specified type
/// </summary>
/// <param name="quantity1">first quantity</param>
/// <param name="quantity2">second quantity</param>
/// <typeparam name="T">input type</typeparam>
/// <typeparam name="R">return type</typeparam>
/// <typeparam name="U">units of measure</typeparam>
/// <returns>product of two quantity values with the same units of measure.</returns>
public static Quantity <R, U> MulValues <R, T, U> (this BaseQuantity <T, U> quantity1, BaseQuantity <T, U> quantity2) where U : IUnit where T : IMultipliable <R, T>
{
return(new Quantity <R, U>(quantity1.Value.Mul(quantity2.Value)));
}
