Microchip 32bit floating point to integer conversion

Hi all,
Have downloaded the Microchip 32bit math plugin (link from the forum!). Great if you are starting from a pair of integers (whole numbers) but I am starting with a floating point number and need to find the macro/gosub/call to insert my value and convert back to an integer.

Has anyone used, or is familiar with this plugin?
Had a nose around in FP32.A18 but couldn't get the thing to work as I wanted.
I tried @ call int3232 with the FP number in AARGB0-3 but all I get is some very odd numbers.

Any help would be great.
Cheers,
Tim.