gsl-sf

gsl-sf-js

special functions of GNU Scientific Library for JS

Installation

Via npm:

npm install gsl-sf

To use it inside node:

var sf = require("gsl-sf");

API

For a full documentation of the original C functions, visit https://www.gnu.org/software/gsl/manual/html_node/Special-Functions.html#Special-Functions. The prefix gsl_sf_ was removed from the original function definitions. For example, while in C you would call gsl_sf_gamma (x) to evaluate the Gamma function at value x , the function is exported simply as gamma(x).

Example:

gamma(3); 

Output:

2

Alternatively, we can use the result object or the result_e10 class to store the return value of the function:

var res = new sf.result()
sf.gamma(3, res)

The result object has two keys: val contains the value and err contains an estimate of the absolute error.

Code:

console.log("The value is " + res.val + ", the error is " + res.err)

Output:

The value is 2, the error is 4.440892098500626e-16