TETRAHEDRON_ARBQ_RULE, a C++ code which returns quadrature rules, with exactness up to total degree 15, over the interior of a tetrahedron in 3D, by Hong Xiao and Zydrunas Gimbutas.
The original source code, from which this library was developed, is available from the Courant Mathematics and Computing Laboratory, at http://www.cims.nyu.edu/cmcl/quadratures/quadratures.html ,
The computer code and data files made available on this web page are distributed under the GNU LGPL license.
TETRAHEDRON_ARBQ_RULE is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.
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