X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=dive.h;h=bdf3aa6e1f52fc8c553377592537741dc95381e9;hb=53ecd2025d00e844fbfb84b5765d975e1e8942be;hp=f0808efb47d3bbe19c4efcb004a957fcc9ad9e9c;hpb=af290d5eb281662d336b8186a9df1a489d78ec9d;p=ext%2Fsubsurface.git

diff --git a/dive.h b/dive.h
index f0808ef..bdf3aa6 100644
--- a/dive.h
+++ b/dive.h
@@ -87,6 +87,8 @@ typedef struct {
 	pressure_t start, end, sample_start, sample_end;
 } cylinder_t;
 
+extern int cylinder_none(cylinder_t *cyl);
+
 extern int get_pressure_units(unsigned int mb, const char **units);
 extern double get_depth_units(unsigned int mm, int *frac, const char **units);
 extern double get_volume_units(unsigned int mm, int *frac, const char **units);
@@ -324,4 +326,6 @@ const char *monthname(int mon);
 #define FIVE_STARS	UTF8_BLACKSTAR UTF8_BLACKSTAR UTF8_BLACKSTAR UTF8_BLACKSTAR UTF8_BLACKSTAR
 extern const char *star_strings[];
 
+#define AIR_PERMILLE 209
+
 #endif /* DIVE_H */