GNU Scientific Library

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GNU Scientific Library

GNU Scientific Library
Developer:	GNU Project
Stable release	1.11 (31 March 2008)
Genre:	Numerical library
License:	GNU General Public License
Website:	http://www.gnu.org/software/gsl/

In computing, the GNU Scientific Library (or GSL) is a software library written in the C programming language for numerical calculations in applied mathematics and science. The GSL is part of the GNU project and is distributed under the GNU General Public License.

Software which uses GSL includes Octave, PSPP and Perl Data Language.

1 Example
2 Features
- 2.1 C++ support
3 See also
4 References
5 External links

[edit] Example

The following example program calculates the value of the Bessel function for 5 ^[1]:

#include <stdio.h>
#include <gsl/gsl_sf_bessel.h>
 
int main(void)
{
  double x = 5.0;
  double y = gsl_sf_bessel_J0(x);
  printf("J0(%g) = %.18e\n", x, y);
  return 0;
}

The example program has to be linked to the GSL library upon compilation:

gcc $(gsl-config --cflags) example.c $(gsl-config --libs)

The output is shown below, and should be correct to double-precision accuracy:

J0(5) = -1.775967713143382920e-01

[edit] Features

The software library provides facilities for:

Basic mathematical functions
Complex numbers
Polynomials
Special functions
Vectors and matrices
Permutations
Combinations
Sorting
BLAS
Linear algebra
Eigensystems
Fast Fourier transforms
Numerical integration
Random number generation
Quasi-random sequences
Random number distributions
Statistics
Histograms
N-tuples
Monte Carlo integration
Simulated annealing
Ordinary differential equations
Interpolation
Numerical differentiation
Chebyshev approximations
Series acceleration
Discrete Hankel transform
Root-finding in one and multiple dimensions
Minimization in one and multiple dimensions
Least-squares fitting
Nonlinear least-squares fitting
Physical constants
IEEE floating-point arithmetic

[edit] C++ support

The GSL can be used in C++ classes, but not using pointers to member functions, because the type of pointer to member function is different from pointer to function ^[2]. Instead, pointers to static functions have to be used. C++ wrappers for GSL are available ^[3].

[edit] See also

netlib
Numerical Recipes
list of numerical analysis software

[edit] References

[edit] External links

GNU Scientific Library project page

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