asa147, a Fortran77 code which evaluates the incomplete Gamma function, by Chi Leung Lau.
This is a version of Applied Statistics Algorithm 147.
The information on this web page is distributed under the MIT license.
asa147 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.
asa032, a Fortran77 library which evaluates the incomplete Gamma function.
asa239, a Fortran77 library which evaluates the incomplete Gamma function.
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Original Fortran77 version by Chi Leung Lau; This version by John Burkardt.