lmm_variable_t var, double value);
void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
lmm_variable_t var, double value);
lmm_variable_t var, double value);
void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
lmm_variable_t var, double value);