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ExponentialUtilities is a package of utility functions for matrix functions of exponential type, including functionalityfor the matrix exponential and phi-functions. These methods are more numerically stable, generic (thus support a widerrange of number types), and faster than the matrix exponentiation tools in Julia's Base. The tools are used by the exponentialintegrators in OrdinaryDiffEq. The package has no external dependencies, so it can also be used independently.

For information on using the package,see the stable documentation. Use thein-development documentation for the version ofthe documentation, which contains the unreleased features.

using ExponentialUtilitiesA=rand(2,2)exponential!(A)v=rand(2);t=rand();expv(t, A, v)