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-rw-r--r--libcrystfel/src/crystal.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/libcrystfel/src/crystal.h b/libcrystfel/src/crystal.h
index 8c32a87d..11b85e35 100644
--- a/libcrystfel/src/crystal.h
+++ b/libcrystfel/src/crystal.h
@@ -46,6 +46,9 @@
**/
typedef struct _crystal Crystal;
+#ifdef __cplusplus
+extern "C" {
+#endif
extern Crystal *crystal_new(void);
extern Crystal *crystal_copy(Crystal *cryst);
@@ -72,4 +75,8 @@ extern void crystal_set_osf(Crystal *cryst, double osf);
extern void crystal_set_image(Crystal *cryst, struct image *image);
extern void crystal_set_mosaicity(Crystal *cryst, double m);
+#ifdef __cplusplus
+}
+#endif
+
#endif /* CRYSTAL_H */