sphere_design_rule_test, a Fortran90 code which calls sphere_design_rule(), which implements a number of Hardin and Sloane "spherical designs", which can be used for numerical quadrature over the surface of a sphere in 3D.
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sphere_design_rule, a Fortran90 code which returns point sets on the surface of the unit sphere in 3D, known as designs, which can be useful for estimating integrals on the surface.
