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-rw-r--r--libcrystfel/src/histogram.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/libcrystfel/src/histogram.h b/libcrystfel/src/histogram.h
index c3ff27f7..2b9d4928 100644
--- a/libcrystfel/src/histogram.h
+++ b/libcrystfel/src/histogram.h
@@ -37,6 +37,11 @@
extern "C" {
#endif
+/**
+ * \file histogram.h
+ * Quick histogram functions
+ */
+
typedef struct _histogram Histogram;
extern Histogram *histogram_init();