CFLib.org – Common Function Library Project

Description:
Calcualte the cost of a car journey based on miles traveled, your car's MPG and the cost of fulel per litre. Defaults set to UK values.

Return Values:
Returns a number.

Example:

<cfoutput>#journeycost(240,43,110.9)#</cfoutput>

Parameters:

Full UDF Source:

/**
 * Calculates the cost of a car journey.
 * 
 * @param miles      Miles traveled. (Required)
 * @param mpg      Miles per gallon. (Required)
 * @param ppl      Price per liter. (Required)
 * @return Returns a number. 
 * @author Dave Hill (write2dave@gmx.co.uk) 
 * @version 1, October 8, 2010 
 */
function journeyCost(miles,mpg,ppl) {
    var litresInGallon = 4.54;
    var cost = ( miles / mpg ) * litresInGallon * ( ppl / 100 );
    return decimalFormat(cost);
}