switches between symbolic/numeric mode
Syntax
symb = symbolic(obj)
symbolic(obj, symb)
Description
symb = symbolic(obj) returns true if symbolic calculation mode is on,
false for numeric mode.
symbolic(obj, symb) sets whether the calculations are in
symbolic/numeric (true/false) mode. Switching to symbolic mode, the
spin values, matrix elements, magnetic field, magnetic structure and
physical units are converted into symbolic variables. If this is not
desired, start with a symbolic mode from the beggining and have full
control over the values of the above mentioned variables.