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-rw-r--r--src/symmetry.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/symmetry.h b/src/symmetry.h
index 45ffe318..4ecf11a4 100644
--- a/src/symmetry.h
+++ b/src/symmetry.h
@@ -48,6 +48,7 @@ extern void get_equiv(const SymOpList *ops, const SymOpMask *m, int idx,
signed int h, signed int k, signed int l,
signed int *he, signed int *ke, signed int *le);
+extern int is_centrosymmetric(const SymOpList *s);
extern SymOpList *get_twins(const SymOpList *source, const SymOpList *target);
#endif /* SYMMETRY_H */