Help calculating extents from esql-c

Hello, I need to calculate the extent size of a table on the fly. The table exists in the database, I want to calculate the correct extent (not use the values in systable for extent) then drop the table and re_create the table with the new extent sizes. I found a shell script in a FAQ on the web , but it depends on a tbcheck and pulls out the "number of pages used." Does someone have the formula.?? Thanks Randy Paries rtparies@ingr.com