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-rw-r--r--core/dive.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/core/dive.h b/core/dive.h
index 51524500f..f361cfcb2 100644
--- a/core/dive.h
+++ b/core/dive.h
@@ -368,6 +368,7 @@ static inline bool dive_cache_is_valid(const struct dive *dive)
extern int get_cylinder_idx_by_use(struct dive *dive, enum cylinderuse cylinder_use_type);
extern void dc_cylinder_renumber(struct dive *dive, struct divecomputer *dc, int mapping[]);
+extern int same_gasmix_cylinder(cylinder_t *cyl, int cylid, struct dive *dive, bool check_unused);
/* when selectively copying dive information, which parts should be copied? */
struct dive_components {