ASA239
the Incomplete Gamma Function


ASA239 is a C library which evaluates the incomplete Gamma function, by Shea.

ASA239 is Applied Statistics Algorithm 239. Source code for many Applied Statistics Algorithms is available through STATLIB.

Licensing:

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

Languages:

ASA239 is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

ASA032, a C library which evaluates the incomplete Gamma function.

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

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

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

Author:

Original FORTRAN77 version by B Shea; C 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:

Examples and Tests:

List of Routines:

You can go up one level to the C source codes.


Last revised on 13 November 2010.