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-rw-r--r--libcrystfel/src/image-hdf5.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libcrystfel/src/image-hdf5.h b/libcrystfel/src/image-hdf5.h
index 93f887e6..84a53d99 100644
--- a/libcrystfel/src/image-hdf5.h
+++ b/libcrystfel/src/image-hdf5.h
@@ -64,4 +64,6 @@ extern ImageFeatureList *image_hdf5_read_peaks_hdf5(const DataTemplate *dtempl,
extern struct event_list *image_hdf5_expand_frames(const DataTemplate *dtempl,
const char *filename);
+extern int is_hdf5_file(const char *filename);
+
#endif /* IMAGE_HDF5_H */