simon-git: spigot (master): Simon Tatham

[Commits to Tartarus CVS repository.]

TL;DR:
  4223a43 Fix assertion failure on log(0).

Repository:     git://git.tartarus.org/simon/spigot.git
On the web:     http://tartarus.org/~simon-git/gitweb/?p=spigot.git
Branch updated: master
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2015-01-08 23:32:59

commit 4223a43ab60aa9d0c13d707258a5ed2bd87a7c7d
web diff http://tartarus.org/~simon-git/gitweb/?p=spigot.git;a=commitdiff;h=4223a43ab60aa9d0c13d707258a5ed2bd87a7c7d;hp=21d22023bc37fd7cc53ebaf3cdbaaafc9018fb2d
Author: Simon Tatham <anakin at pobox.com>
Date:   Thu Jan 8 23:30:36 2015 +0000

    Fix assertion failure on log(0).
    
    Given a rational zero to take the log of, we subject it to an
    assertion-failing spigot_mobius() before getting as far as the
    exception-throwing code. Do a check for rationals to report an obvious
    input zero _before_ trying to divide by it.

 exp.cpp |   14 ++++++++++++++
 1 file changed, 14 insertions(+)