gsl: gsl - GNU Scientific Library gsl: gsl: The GNU Scientific Library (GSL) is a numerical library for C and C++ gsl: programmers. It is free software under the GNU General Public License. gsl: The library provides a wide range of mathematical routines such as gsl: random number generators, special functions and least-squares fitting. gsl: There are over 1000 functions in total with an extensive test suite. gsl: gsl: gsl: gsl: