poeschko/Mathics — pull request #76 by sn6uv (2012-12-17 14:49:05+00:00)
Title: WIP: Precision issues

There are a few issues to be solved:
* There needs to be a distinction between `MachinePrecision` [MMA docs](http://reference.wolfram.com/mathematica/ref/MachinePrecision.html)
and `$MachinePrecision` [MMA docs](http://reference.wolfram.com/mathematica/ref/$MachinePrecision.html). I'm not sure how best to approach this at the moment. Fixing this might require some changes to core.
* The precision handling of machine precision numbers needs to be changed.`Precision[1.]` for example should return `MachinePrecision` not `18` (which is `$MachinePrecision` evaluated).