The first patch here is a trivial comment fix for numbers.test.

The second patch fixes some serious problems in the logarithm functions
when applied to large integers, large or small fractions, or fractions
with large numerators and denominators which are close to 1.  I strongly
recommend including it in 2.0.0.

The third patch contains round-ash, the new rounding arithmetic shift
operator.  I think it's useful and would like to see it in 2.0, but will
understand if you wish otherwise.  This version has been rebased to the
current trunk.

     Best,
      Mark