toms291

toms291, a C code which approximates the logarithm of the Gamma function.

The text of many ACM TOMS algorithms is available online through ACM: https://calgo.acm.org/ or NETLIB: https://www.netlib.org/toms/index.html.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

toms291 is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version.

Related Data and Programs:

toms291_test

polpak, a C code which evaluates a variety of special functions.

test_values, a C code which tabulates several values of a variety of special functions.

Reference:

1. Malcolm Pike, David Hill,
   Algorithm 291: Logarithm of Gamma Function,
   Communications of the ACM,
   Volume 9, Number 9, September 1966, page 684.

Source Code:

• toms291.c, the source code.
• toms291.sh, compiles the source code.
• toms291.h, the include file.