These are chat archives for Fortran-FOSS-Programmers/General-Discussion
t. It reflects very well that the residual function can or cannot explicitely depend on time. If the concrete ODE has
U_t=R(U(t))than you will not pass
tto the method
%time_derivative, on the contrary if
U_t=R(U(t), t))you will pass
t. So, the API is not unique, but the usefulness of having an abstract is tremendus. I am not so rigorous in exploiting abstract.