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-rw-r--r--src/PJ_deformation.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/PJ_deformation.cpp b/src/PJ_deformation.cpp
index 1398f5fd..49f62c01 100644
--- a/src/PJ_deformation.cpp
+++ b/src/PJ_deformation.cpp
@@ -63,11 +63,13 @@ PROJ_HEAD(deformation, "Kinematic grid shift");
#define TOL 1e-8
#define MAX_ITERATIONS 10
+namespace { // anonymous namespace
struct pj_opaque {
double t_obs;
double t_epoch;
PJ *cart;
};
+} // anonymous namespace
/********************************************************************************/
static XYZ get_grid_shift(PJ* P, XYZ cartesian) {