In ColdFusion, is there a numberFormat() mask to drop the decimal if it is 0?

I do not think there is an existing function, but this rounding example might do the trick:

    round(yourNumber * 100) / 100

EDIT: As JasonM mentioned in the comments this will not produce two decimal places for numbers like 1.1.

You could divide the variable by 1 and then the whole number is shown without a decimal place.

<cfset a = 5.00>
<cfset b = 5.55>

<cfoutput>#a/1#, #b/1#</cfoutput>

Output is 5, 5.55. Instead of 5.00, 5.55 if you don't divide by 1.

Ok, I know this question is years old and my solution is dumb as hell but it worked for my needs:

#replace(dollarformat(list_price), '.00', '')#

I know this was dollarformat not number format, but the concept is the same.

LOL. If it's dumb and it works it's not dumb, right?

<cfif int(x) eq x>
  #int(x)#
<cfelse>
  #DecimalFormat(x)#
</cfif>