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.issues/cd79223a108d3900/new/1221008555.M511949P30017Q2.cole
author Dmitriy Morozov <dmitriy@mrzv.org>
Fri, 02 Jan 2009 14:54:15 -0800
branchdev
changeset 108 e096f8892a04
parent 89 089d799d7ea2
child 121 b2103b289f06
permissions -rwxr-xr-x
Added rips-zigzag; in the process caught a number of bugs in ZigzagPersistence (added check_consistency() to it)

From: Dmitriy Morozov <morozov@cs.duke.edu>
Date: Fri, 22 Feb 2008 18:39:31 -0500
State: new
Subject: Incorrect sign_at() in UPolynomial<double>
Message-Id: <cd79223a108d3900-0-artemis@metatron>

UPolynomial<double>::sign_at() reports -1 as the sign of -2*x + 4 at x = 2. 
Should be 0.
Dionysus