CFLib.org – Common Function Library Project

Description:
Converts degrees Rankine to degrees Celsius. Note that the Rankine temperature scale has an absolute zero (negative Rankine temperatures do not exist). If a temperature below 0 Rankine (absolute 0) is passed, the funciton will return an invalid result.

Return Values:
Returns a float.

Example:

<CFSET r=0>
<CFOUTPUT>
Given r=#r#<BR>
#r# degrees Rankine = #RankineToCelsius(r)# degrees Celsius.
</CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * Converts degrees Rankine to degrees Celsius.
 * Minor enhancements by Rob Brooks-Bilson (rbils@amkor.com).
 * 
 * @param rankine      Degrees Rankine you want converted to degrees Celsius 
 * @return Returns a float. 
 * @author Tony Blackmon (fluid@sc.rr.com) 
 * @version 1.0, September 17, 2001 
 */
function RankineToCelsius(rankine)
{
  Return (rankine-491.67)/1.8;
}