Added convenience function for double vector deallocation.

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@122 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/include/dv.h

@@ -71,7 +71,8 @@ double sum_double_vector_over_bdd(DdManager *ddman, double *vec, DdNode *filter,
 double sum_double_vector_over_mtbdd(DdManager *ddman, double *vec, DdNode *mult, DdNode **vars, int num_vars, ODDNode *odd);
 
 DistVector *double_vector_to_dist(double *v, int n);
-void free_dist_vector(DistVector *dv);
+void free_dist_vector(DistVector *&dv);
+void free_dv_or_dist_vector(double *&v, DistVector *&dv);
 
 //------------------------------------------------------------------------------
 

prism/src/dv/dv.cc

@@ -455,11 +455,22 @@ DistVector *double_vector_to_dist(double *v, int n)
 
 // free distinct vector struct
 
-void free_dist_vector(DistVector *dv)
+void free_dist_vector(DistVector *&dv)
 {
 	free(dv->dist);
 	free(dv->ptrs);
 	free(dv);
+	dv = NULL;
+}
+
+//------------------------------------------------------------------------------
+
+// delete double array, distinct vector struct, or both
+
+void free_dv_or_dist_vector(double *&v, DistVector *&dv)
+{
+	if (v) { free(v); v = NULL; }
+	if (dv) { free_dist_vector(dv); dv = NULL; }
 }
 
 //------------------------------------------------------------------------------