Index: /issm/trunk-jpl/src/c/include/types.h
===================================================================
--- /issm/trunk-jpl/src/c/include/types.h	(revision 12413)
+++ /issm/trunk-jpl/src/c/include/types.h	(revision 12414)
@@ -28,7 +28,13 @@
 
 #ifdef _HAVE_ADOLC_
+// for active variables
 typedef adouble IssmDouble;
+// for passive variables
+typedef double IssmPDouble;
 #else 
+// see above
 typedef double IssmDouble; 
+// see above
+typedef IssmDouble IssmPDouble;
 #endif