lmm_variable_t var, double value);
void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
lmm_variable_t var, double value);
+void lmm_elem_set_value(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
lmm_variable_t var, int num);