CFLib.org – Common Function Library Project

Description:
Cuts a number to a certain amount of decimal places without rounding.

Return Values:
Returns a number.

Example:

<cfoutput>#TruncNumber(3.646)#</cfoutput>

Parameters:

Full UDF Source:

/**
 * Cuts a number to a certain amount of decimal places without rounding.
 * 
 * @param input      Decimal number. (Required)
 * @param decimals      Number of decimals to the right of the period. Defaults to 2. (Optional)
 * @return Returns a number. 
 * @author Tony Monast (tony@ckm9.com) 
 * @version 1, June 15, 2006 
 */
function truncNumber(input) {
    var decimals = 2;
    var regex = "";
    var st = "";
    if(arrayLen(arguments) EQ 2) decimals = arguments[2];
    regex = "^\d*(.\d{1," & decimals & "})?";
    st = reFind(regex,input,1,true);
    return mid(input,st.pos[1],st.len[1]);
}