asa239


asa239, a FORTRAN77 code which evaluates the incomplete Gamma function, by Shea.

This is a version of Applied Statistics Algorithm 239.

Licensing:

The computer code and data files described and made available on this web page are distributed under the MIT license

Languages:

asa239 is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

asa239_test

asa032, a FORTRAN77 library which evaluates the incomplete Gamma function.

ASA147, a FORTRAN77 library which evaluates the incomplete Gamma function.

PROB, a FORTRAN77 library which evaluates and inverts a number of probabilistic distributions.

TEST_VALUES, a FORTRAN77 library which contains sample values for a number of distributions.

TOMS435, a FORTRAN77 library which evaluates the modified incomplete Gamma function.

TOMS708, a FORTRAN77 library which includes routines to evaluate the incomplete Gamma function.

Author:

Original FORTRAN77 version by B Shea; This version by John Burkardt.

Reference:

  1. B Shea,
    Algorithm AS 239: Chi-squared and Incomplete Gamma Integral,
    Applied Statistics,
    Volume 37, Number 3, 1988, pages 466-473.

Source Code:


Last revised on 26 August 2023.