Make GF values configurable

There are a couple of issues with this commit:

GtkEntry should emit the 'changed' signal when it is modified (so that
changes in the preferences get applied right away) - but that doesn't
appear to be working consistently.

Also, this doesn't appear to affect the deco of any dives that I try it
with. So my guess is something is wrong with the underlying deco
algorithm. That's diappointing.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/deco.c b/deco.c
index e18779ac8..efcdfd39b 100644
--- a/deco.c
+++ b/deco.c
@@ -10,6 +10,7 @@
  * add_segment(pressure, gasmix, seconds) - add <seconds> at the given pressure, breathing gasmix
  * deco_allowed_depth(tissues_tolerance, surface_pressure, dive, smooth)
  *				- ceiling based on lead tissue, surface pressure, 3m increments or smooth
+ * set_gf(gflow, gfhigh) - set Buehlmann gradient factors
  */
 #include <math.h>
 #include "dive.h"
@@ -244,3 +245,11 @@ unsigned int deco_allowed_depth(double tissues_tolerance, double surface_pressur
 
 	return depth;
 }
+
+void set_gf(double gflow, double gfhigh)
+{
+	if (gflow != -1.0)
+		buehlmann_config.gf_low = gflow;
+	if (gfhigh != -1.0)
+		buehlmann_config.gf_high = gfhigh;
+}