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-rw-r--r--src/PJ_helmert.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/PJ_helmert.cpp b/src/PJ_helmert.cpp
index c19422cb..b2072a84 100644
--- a/src/PJ_helmert.cpp
+++ b/src/PJ_helmert.cpp
@@ -65,6 +65,7 @@ static LPZ helmert_reverse_3d (XYZ xyz, PJ *P);
/***********************************************************************/
+namespace { // anonymous namespace
struct pj_opaque_helmert {
/************************************************************************
Projection specific elements for the "helmert" PJ object
@@ -87,6 +88,7 @@ struct pj_opaque_helmert {
int no_rotation, exact, fourparam;
int is_position_vector; /* 1 = position_vector, 0 = coordinate_frame */
};
+} // anonymous namespace
/* Make the maths of the rotation operations somewhat more readable and textbook like */