fem_basis_test, a FORTRAN77 code which calls fem_basis(), which evaluates basis functions associated with an M-dimensional simplex (a 1D interval, a 2D triangle, a 3D tetrahedron, and the higher-dimensional generalizations).
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fem_basis, a FORTRAN77 code which evaluates basis functions associated with an M-dimensional simplex (a 1D interval, a 2D triangle, a 3D tetrahedron, and the higher-dimensional generalizations).