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-rw-r--r--src/PJ_gn_sinu.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/PJ_gn_sinu.cpp b/src/PJ_gn_sinu.cpp
index 2c7824ac..c9885012 100644
--- a/src/PJ_gn_sinu.cpp
+++ b/src/PJ_gn_sinu.cpp
@@ -15,10 +15,12 @@ PROJ_HEAD(mbtfps, "McBryde-Thomas Flat-Polar Sinusoidal") "\n\tPCyl, Sph";
#define MAX_ITER 8
#define LOOP_TOL 1e-7
+namespace { // anonymous namespace
struct pj_opaque {
double *en;
double m, n, C_x, C_y;
};
+} // anonymous namespace
static XY e_forward (LP lp, PJ *P) { /* Ellipsoidal, forward */