From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 11 Feb 2014 20:07:53 +0000 (-0500)
Subject: Fix backward_substitute.
X-Git-Url: http://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=7221311858e4029c2f2d2de6bfdca2dd641548dc;hp=7221311858e4029c2f2d2de6bfdca2dd641548dc;p=numerical-analysis.git

Fix backward_substitute.
Add 'solve_positive_definite' to Linear.System.
Add tests for everything in Linear.System.
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