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The GNU Octave interval package for real-valued [https://en.wikipedia.org/wiki/Interval_arithmetic interval arithmetic]. | The GNU Octave interval package for real-valued [https://en.wikipedia.org/wiki/Interval_arithmetic interval arithmetic]. | ||
* Intervals are closed, connected subsets of the real numbers. Intervals may be unbound (in either or both directions) or empty. In special cases <code>+inf</code> and <code>-inf</code> are used to denote boundaries of unbound intervals, but any member of the interval is a finite real number. | * Intervals are closed, connected subsets of the real numbers. Intervals may be unbound (in either or both directions) or empty. In special cases <code>+inf</code> and <code>-inf</code> are used to denote boundaries of unbound intervals, but any member of the interval is a finite real number. | ||
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* The result of an interval arithmetic function is an interval in general. It might happen, that the mathematical range of a function consist of several intervals, but their union will be returned, e. g., 1 / [-1, 1] = [Entire]. | * The result of an interval arithmetic function is an interval in general. It might happen, that the mathematical range of a function consist of several intervals, but their union will be returned, e. g., 1 / [-1, 1] = [Entire]. | ||
__TOC__ | |||
[[File:Interval-sombrero.png|280px|thumb|left|Example: Plotting the interval enclosure of a function]] | [[File:Interval-sombrero.png|280px|thumb|left|Example: Plotting the interval enclosure of a function]] | ||
<div style="clear:left"></div> | <div style="clear:left"></div> | ||
== Distribution == | == Distribution == | ||
* [https://octave.sourceforge.io/interval/ Latest version at Octave Forge] | |||
** <code>pkg install -forge interval</code> | |||
** [https://octave.sourceforge.io/interval/overview.html function reference] | |||
** [https://octave.sourceforge.io/interval/package_doc/index.html package documentation] (user manual) | |||
'''Third-party''' | |||
* [https://tracker.debian.org/pkg/octave-interval Debian GNU/Linux], [https://launchpad.net/ubuntu/+source/octave-interval Launchpad Ubuntu] | * [https://tracker.debian.org/pkg/octave-interval Debian GNU/Linux], [https://launchpad.net/ubuntu/+source/octave-interval Launchpad Ubuntu] | ||
* [https://aur.archlinux.org/packages/octave-interval/ archlinux user repository] | * [https://aur.archlinux.org/packages/octave-interval/ archlinux user repository] | ||
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[[Category:Octave Forge]] | [[Category:Octave-Forge]] |