debugging discs (in broken state!)

src/binary_c_function_macros.h

src/binary_c_maths.h

src/binary_c_parameters.h

src/disc/disc_bisection_rooter.c

src/disc/disc_calc_disc_structure.c

src/disc/disc_constraints.h

src/disc/disc_new_zone_radii.c

src/disc/disc_parameter_space.c

.../disc_setup_convergence_parameter_types_and_constraints.c

src/disc/disc_show_thermal_zones.c

src/disc/disc_trisector.c

tbse