[![Build Status](https://travis-ci.org/frithnanth/raku-Math-Libgsl-Elementary.svg?branch=master)](https://travis-ci.org/frithnanth/raku-Math-Libgsl-Elementary) NAME ==== Math::Libgsl::Elementary - An interface to libgsl, the Gnu Scientific Library - elementary functions. SYNOPSIS ======== ```perl6 use Math::Libgsl::Elementary :ALL; ``` DESCRIPTION =========== Math::Libgsl::Elementary provides an interface to the Elementary Functions in the libgsl, the GNU Scientific Library. This package provides both the low-level interface to the C library (Raw) and a more comfortable interface layer for the Raku programmer. Math::Libgsl::Elementary makes these tags available: * :elem * :smallint ### sub log1p(Num() $x --> Num) is export(:elem) Computes the value of log(1 + x). ### sub expm1(Num() $x --> Num) is export(:elem) Computes the value of exp(x) - 1. ### sub hypot(Num() $x, Num() $y --> Num) is export(:elem) Computes the value of sqrt(x² + y²). ### sub hypot3(Num() $x, Num() $y, Num() $z --> Num) is export(:elem) Computes the value of sqrt(x² + y² + z²). ### sub ldexp(Num() $x, Int $e --> Num) is export(:elem) Computes the value of x * 2ᵉ. ### sub frexp(Num() $x --> List) is export(:elem) Computes the value of f such that x = f * 2ᵉ. It returns a list of two values: f and e. ### sub int-pow(Num() $x, Int $e --> Num) is export(:smallint) Computes the value of xᵉ with e ∈ ℤ. ### sub uint-pow(Num() $x, UInt $e --> Num) is export(:smallint) Computes the value of xᵉ with e ∈ ℕ. ### sub pow2(Num() $x --> Num) is export(:smallint) Computes the value of x². ### sub pow3(Num() $x --> Num) is export(:smallint) Computes the value of x³. ### sub pow4(Num() $x --> Num) is export(:smallint) Computes the value of x⁴. ### sub pow5(Num() $x --> Num) is export(:smallint) Computes the value of x⁵. ### sub pow6(Num() $x --> Num) is export(:smallint) Computes the value of x⁶. ### sub pow7(Num() $x --> Num) is export(:smallint) Computes the value of x⁷. ### sub pow8(Num() $x --> Num) is export(:smallint) Computes the value of x⁸. ### sub pow9(Num() $x --> Num) is export(:smallint) Computes the value of x⁹. C Library Documentation ======================= For more details on libgsl see [https://www.gnu.org/software/gsl/](https://www.gnu.org/software/gsl/). The excellent C Library manual is available here [https://www.gnu.org/software/gsl/doc/html/index.html](https://www.gnu.org/software/gsl/doc/html/index.html), or here [https://www.gnu.org/software/gsl/doc/latex/gsl-ref.pdf](https://www.gnu.org/software/gsl/doc/latex/gsl-ref.pdf) in PDF format. Prerequisites ============= This module requires the libgsl library to be installed. Please follow the instructions below based on your platform: Debian Linux and Ubuntu 20.04 ----------------------------- sudo apt install libgsl23 libgsl-dev libgslcblas0 That command will install libgslcblas0 as well, since it's used by the GSL. Ubuntu 18.04 ------------ libgsl23 and libgslcblas0 have a missing symbol on Ubuntu 18.04. I solved the issue installing the Debian Buster version of those three libraries: * [http://http.us.debian.org/debian/pool/main/g/gsl/libgslcblas0_2.5+dfsg-6_amd64.deb](http://http.us.debian.org/debian/pool/main/g/gsl/libgslcblas0_2.5+dfsg-6_amd64.deb) * [http://http.us.debian.org/debian/pool/main/g/gsl/libgsl23_2.5+dfsg-6_amd64.deb](http://http.us.debian.org/debian/pool/main/g/gsl/libgsl23_2.5+dfsg-6_amd64.deb) * [http://http.us.debian.org/debian/pool/main/g/gsl/libgsl-dev_2.5+dfsg-6_amd64.deb](http://http.us.debian.org/debian/pool/main/g/gsl/libgsl-dev_2.5+dfsg-6_amd64.deb) Installation ============ To install it using zef (a module management tool): $ zef install Math::Libgsl::Elementary AUTHOR ====== Fernando Santagata COPYRIGHT AND LICENSE ===================== Copyright 2020 Fernando Santagata This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.