fem1d_lagrange, a Fortran90 code which sets up the matrices and vectors associated with the finite element method (FEM) solution of a boundary value problem (BVP) -u''+u=f(x), using Lagrange basis polynomials.
The information on this web page is distributed under the MIT license.
fem1d_lagrange is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version.
fem1d, a Fortran90 code which applies the finite element method (FEM) to a 1D linear two point boundary value problem (BVP).
lagrange_interp_1d, a Fortran90 code which defines and evaluates the Lagrange polynomial p(x) which interpolates a set of data, so that p(x(i)) = y(i).