2 days ago
ValidatedNumerics.jl is a suite of Julia packages for performing Validated Numerics in Julia, i.e. rigorous computations with finite-precision floating-point arithmetic, using interval arithmetic: quantities are treated as intervals that are propagated throughout a calculation. The final result is an interval that is guaranteed to contain the correct result, starting from the given initial data.
The aims of the package are both correctness and good performance.
To install the package, from within Julia do
Since version 0.9,
ValidatedNumerics.jl is a meta-package that automatically installs and reexports the following packages from the
JuliaIntervals GitHub organization:
IntervalArithmetic.jl: arithmetic and elementary functions on intervals
IntervalRootFinding.jl: find roots of functions in a guaranteed way
IntervalConstraintProgramming.jl: characterization of feasible sets of equations and inequalities
IntervalContractors.jl: contractors and reverse (or inverse) functions
Documentation is available separately for each of the above packages.
The IEEE Std 1788-2015 - IEEE Standard for Interval Arithmetic was published in June 2015. We are working towards having
ValidatedNumerics be conformant with this standard.
To do so, we have incorporated tests from the excellent ITF1788 test suite, originally written by Marco Nehmeier and Maximilian Kiesner, and converted to a common format and to output tests for Julia by Oliver Heimlich.
This project was begun during a masters' course in the postgraduate programs in Physics and in Mathematics at UNAM during the second semester of 2013 (in Python -- the
ValidiPy package), and was reinitiated -- now in Julia -- in the first semester of 2015. We thank the participants of the courses for putting up with the half-baked material and contributing energy and ideas.
Financial support is acknowledged from DGAPA-UNAM PAPIME grants PE-105911 and PE-107114, and DGAPA-UNAM PAPIIT grant IN-117214. LB acknowledges support through a Cátedra Marcos Moshinsky (2013). DPS acknowledges a sabbatical fellowship from CONACYT and thanks Alan Edelman and the Julia group at MIT for hosting his sabbatical visit.