Format currency value

Hello, is there any way to format currency value using format-number such that
the two decimal digits are displayed only if there is a decimal value in the
input?

E.g 1250 should be displayed as $1,250 but 12.5 should be displayed as $12.50

format-number with pattern "#,###.00" always appends .00 to non-decimal amount
value also.

Thanks
Sujatha