square_arbq_rule_test, a FORTRAN90 code which calls square_arbq_rule(), which returns quadrature rules, with exactness up to total degree 30, over the interior of the symmetric square in 2D, by Hong Xiao and Zydrunas Gimbutas.
The computer code and data files made available on this web page are distributed under the MIT license
square_arbq_rule, a FORTRAN90 code which returns quadrature rules, with exactness up to total degree 20, over the interior of the symmetric square in 2D, by Hong Xiao and Zydrunas Gimbutas.
SQUARE08 is a degree 8 rule in the symmetric square.