The following list is not up to date: * _lsft() and _rsft() could probably be a bit more optimized * move _log_int() to XS * _digit() should be in XS * _zeros() could be more optimized (divide by 1e5, check for == 0?) * replace all malloc() with New() and all free() with Savefree()? Please send me test-reports, your experiences with this and your ideas - I love to hear about my work! Tels