differ_test, a FORTRAN90 code which calls differ(), which determines the finite difference 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.
The computer code and data files made available on this web page are distributed under the MIT license
differ, a FORTRAN90 code which determines the finite difference method (FDM) coefficients necessary to compute an approximation of given accuracy to a derivative of a given order.