# CFLib.org – Common Function Library Project

## RoundUpDown(input[, multiple][, direction])

##### Last updated June 27, 2002

Version: 1 | Requires: CF5 | Library: MathLib

Description:
Rounds a number up or down to the nearest specified multiple.

Return Values:
Returns a numberic value

Example:

``````<CFOUTPUT>
RoundUpDown(102): #RoundUpDown(102)#<BR>
RoundUpDown(102,10,"up"): #RoundUpDown(102,10,"up")#<BR>
RoundUpDown(102,10,"down"): #RoundUpDown(102,10,"down")#<BR>
</CFOUTPUT>
``````

Parameters:

Name Description Required
input Number you want to round. Yes
multiple Multiple by which to round. Default is 5. No
direction Direction to round. Options are Up or Down. Default is Up No

Full UDF Source:

``````/**
* Rounds a number up or down to the nearest specified multiple.
*
* @param input      Number you want to round. (Required)
* @param multiple      Multiple by which to round.  Default is 5. (Optional)
* @param direction      Direction to round.  Options are Up or Down.  Default is Up (Optional)
* @return Returns a numberic value
* @author Casey Broich (cab@pagex.com)
* @version 1, June 27, 2002
*/
function RoundUpDown(input){
var roundval = 5;
var direction = "Up";
var result = 0;

if(ArrayLen(arguments) GTE 2)
roundval = arguments[2];
if(ArrayLen(arguments) GTE 3)
direction = arguments[3];
if(roundval EQ 0)
roundval = 1;

if((input MOD roundval) NEQ 0){
if((direction IS 1) OR (direction IS "Up")){
result = input + (roundval - (input MOD roundval));
}else{
result = input - (input MOD roundval);
}
}else{
result = input;
}
return result;
}
``````

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