midpoint_explicit, a Fortran77 code which solves one or more ordinary differential equations (ODE) using the (explicit) midpoint method, also known as the modified Euler method.
The computer code and data files described and made available on this web page are distributed under the MIT license
midpoint_explicit is available in a C version and a C++ version and a Fortran77 version and a Fortran90 version and a MATLAB version and an Octave version and a Python version and an R version
midpoint_fixed, a FORTRAN90 code which solves one or more ordinary differential equations (ODE) using the (implicit) midpoint method, using fixed point iteration for the nonlinear equation.
rk4, a FORTRAN90 code which applies the fourth order Runge-Kutta (RK) algorithm to estimate the solution of an ordinary differential equation (ODE).