square_symq_rule, a Python code which returns symmetric quadrature rules, with exactness up to total degree 20, over the interior of the unit square, 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 https://www.cims.nyu.edu/cmcl/quadratures/quadratures.html ,
The computer code and data files made available on this web page are distributed under the MIT license
square_symq_rule is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and a Octave version and a Python version.
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