differ


differ, a FORTRAN90 code which determines the finite difference method (FDM) coefficients necessary in order to combine function values at known locations to compute an approximation of given accuracy to a derivative of a given order.

Licensing:

The computer code and data files made available on this web page are distributed under the MIT license

Languages:

differ is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

differ_test

divdif, a FORTRAN90 code which uses divided differences to compute the polynomial interpolant to a given set of data.

Reference:

  1. Ake Bjorck, Victor Pereyra,
    Solution of Vandermonde Systems of Equations,
    Mathematics of Computation,
    Volume 24, Number 112, October 1970, pages 893-903.

Source Code:


Last revised on 16 June 2020.