* optimization: unsigned integer divisions by a constant are implemented
using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
* optimization: improved type-derivation for LOAD-TIME-VALUE.
* optimization: unsigned integer divisions by a constant are implemented
using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
* optimization: improved type-derivation for LOAD-TIME-VALUE.