ceil math function stopped working

ceil math function has stopped working in Caldera.

eg.
ceil(%rooms_private% + (%rooms_shared% / 2) + (%dorm_beds% / 4) + (%caravans% / 2) + (%sites% / 8) + (%lodges% * 3) + (%meeting%) + (%sundry% / 8) + (%dummy% / 8))

returns nothing.

Have had to resort to using round math function instead which isn’t the level of accuracy required