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-rw-r--r--core/deco.c3
-rw-r--r--core/gas.h2
2 files changed, 3 insertions, 2 deletions
diff --git a/core/deco.c b/core/deco.c
index c649c4227..650376c60 100644
--- a/core/deco.c
+++ b/core/deco.c
@@ -30,7 +30,6 @@
#include "planner.h"
#include "qthelper.h"
-enum inertgas { N2, HE };
#define cube(x) (x * x * x)
// Subsurface until v4.6.2 appeared to produce marginally less conservative plans than our benchmarks.
@@ -293,7 +292,7 @@ double tissue_tolerance_calc(struct deco_state *ds, const struct dive *dive, dou
/*
* Return Buehlmann factor for a particular period and tissue index.
*/
-static double factor(int period_in_seconds, int ci, enum inertgas gas)
+static double factor(int period_in_seconds, int ci, enum gas_component gas)
{
if (period_in_seconds == 1) {
if (gas == N2)
diff --git a/core/gas.h b/core/gas.h
index f5d948da0..316f4d3de 100644
--- a/core/gas.h
+++ b/core/gas.h
@@ -10,6 +10,8 @@ extern "C" {
#include <stdbool.h>
#endif
+enum gas_component { N2, HE, O2 };
+
// o2 == 0 && he == 0 -> air
// o2 < 0 -> invalid
struct gasmix {