pyramid_integrals_test, a FORTRAN77 code which calls pyramid_integrals(), which returns the exact value of the integral of any monomial x^i y^j z^k over the interior of the unit pyramid in 3D.
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pyramid_integrals, a FORTRAN77 code which returns the exact value of the integral of any monomial x^i y^j z^k over the interior of the unit pyramid in 3D.