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interval 1.4.0 released

From: Oliver Heimlich
Subject: interval 1.4.0 released
Date: Tue, 9 Feb 2016 18:37:01 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.5.0


a new release of the interval package for real-valued interval
arithmetic [1] is out, version 1.4.0.

A summary of important user-visible changes is also available online
[2]. I am particularly excited about the new function “expm” for
interval matrix exponentiation, which can be used for initial value
problems of linear ODEs with constant coefficients. More interesting use
cases of the package can be found in the manual [3].

The interval package for real-valued interval arithmetic allows one to
evaluate functions over subsets of their domain.  All results are
verified, because interval computations automatically keep track of any

These concepts can be used to handle uncertainties, estimate arithmetic
errors and produce reliable results.  Also it can be applied to
computer-assisted proofs, constraint programming, and verified computing.

The implementation is based on interval boundaries represented by
binary64 numbers and is conforming to IEEE Std 1788-2015, IEEE standard
for interval arithmetic.

Enjoy Octave and free your intervals,


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