Prepare for PSCR calculations

Calculations for passive semi-closed rebreathers are pretty much like OC
except the pO2 is lower bey a certain (SAC dependent) factor. This patch
introduces the corresponding calculations in case dctype == PSCR which is
so far never set and there is currently no UI for these calculations. As
pO2 is SAC dependent it takes a certain attempt at getting it and drops to
defaults from the prefs otherwise.

As there is no UI at this point and I also don't have any dives, this has
not received much testing, yet, but it compiles. At least.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/deco.c b/deco.c
index 51c26eac6..c2d54d59c 100644
--- a/deco.c
+++ b/deco.c
@@ -18,6 +18,7 @@
 #include <math.h>
 #include <string.h>
 #include "dive.h"
+#include <assert.h>
 
 //! Option structure for Buehlmann decompression.
 struct buehlmann_config {
@@ -184,12 +185,12 @@ double he_factor(int period_in_seconds, int ci)
 }
 
 /* add period_in_seconds at the given pressure and gas to the deco calculation */
-double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int ccpo2, const struct dive *dive)
+double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int ccpo2, const struct dive *dive, int sac)
 {
 	int ci;
 	struct gas_pressures pressures;
 
-	fill_pressures(&pressures, pressure - WV_PRESSURE, gasmix, (double) ccpo2 / 1000.0);
+	fill_pressures(&pressures, pressure - WV_PRESSURE, gasmix, (double) ccpo2 / 1000.0, ccpo2 ? CCR : OC, sac);
 
 	if (buehlmann_config.gf_low_at_maxdepth && pressure > gf_low_pressure_this_dive)
 		gf_low_pressure_this_dive = pressure;