fem2d_sample_test, a Fortran77 code which calls fem2d_sample(), which evaluates a finite element function of a 2D argument.
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fem2d_sample, a Fortran77 code which evaluates a finite element function of a 2D argument.
SQ is FEM data for the function f(x,y)=x^2+y^2, on a 5x5 grid of nodes, organized into linear triangles. The sample data seeks the values of this function on a 4x4 evenly spaced grid.