VPM-B: add vpm-b based deco checking.

Check during the trial_ascent() if existing pressure gradient is
smaller than previously calculated max gradient. If not, ascent
is impossible from the vpm-b's point of view.

Signed-off-by: Jan Darowski <jan.darowski@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/dive.h b/dive.h
index d9885184e..9b44700e7 100644
--- a/dive.h
+++ b/dive.h
@@ -785,6 +785,7 @@ extern void cache_deco_state(double, char **datap);
 extern double restore_deco_state(char *data);
 extern void nuclear_regeneration(double time);
 extern void vpmb_start_gradient();
+extern bool is_vpmb_ok(double pressure);
 
 /* this should be converted to use our types */
 struct divedatapoint {