![]() ![]() Most arithmetic operations produce tight, correctly-rounded results.In addition there are functions for interval matrix arithmetic, N-dimensional interval arrays, plotting, and solvers.The standard was approved by IEEE-SA on December 6, 2017 (and published in January 2018). Also, the minimalistic standard IEEE Std 1788.1-2017, IEEE standard for interval arithmetic (simplified) is fully implemented.The standard was approved by ANSI in 2016. The standard was approved by IEEE-SA on June 11, 2015. All required functions from IEEE Std 1788-2015, IEEE standard for interval arithmetic, are implemented.It might happen, that the mathematical range of a function consist of several intervals, but their union will be returned, e. g., 1 / =. The result of an interval arithmetic function is an interval in general. ![]() Most interval arithmetic functions in this package manage to produce a very accurate such enclosure. Classical functions are extended to interval functions as follows: The result of function f evaluated on interval x is an interval enclosure of all possible values of f over x where the function is defined.In special cases +inf and -inf are used to denote boundaries of unbound intervals, but any member of the interval is a finite real number. Intervals may be unbound (in either or both directions) or empty. Intervals are closed, connected subsets of the real numbers.The GNU Octave interval package for real-valued interval arithmetic. Runtime: mpfr (≥ 3.1.0) libmpfr4 for Debianīuild: mpfr (≥ 3.1.0) libmpfr-dev for Debian ![]()
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