Determines a starting base.
int get_basiscrash(lprec *lp);
Specifies which basis crash mode is used. Can by any of the following values:
The get_basiscrash function returns which basis crash mode must be used. Default is CRASH_NOTHING.
When no base crash is done (the default), the initial basis from which lp_solve starts to solve the model is the basis containing all slack or artificial variables that is automatically associates with each constraint.
When base crash is enabled, a heuristic ``crash procedure'' is executed before the first simplex iteration to quickly choose a basis matrix that has fewer artificial variables. This procedure tends to reduce the number of iterations to optimality since a number of iterations are skipped. lp_solve starts iterating from this basis until optimality.