mifr/subsurface
1
0
Fork 0
mirror of https://github.com/subsurface/subsurface.git synced 2025-02-19 22:16:15 +00:00
Code Issues Projects Releases Packages Wiki Activity

Function for "gravity conversion"

Browse source 
This adds a common macro to convert salinity (which is
given as a density in terms of g per 10l) to a specific
weight with units of mbar / mm = bar / m that is used
to translate between pressures and depths.

The weired factor of 10 (from the unusual unit of salinity)
is included in the macro. It is there for historical reasons,
as it goes back to 05b55542c8 from 2012 where it was introduced
in code for downloading from Uemis dive computers.

Now, salinity appears in too many places to easily remove
this unconventional factor of 10 everywhere without breaking
to many things (including various dive computer downloads).

Signed-off-by: Robert C. Helling <helling@atdotde.de>
This commit is contained in:
Robert C. Helling 2020-09-02 20:14:45 +02:00 • committed by Dirk Hohndel
parent d404aa767f
commit b1a1dc3639
2 changed files with 18 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

1
core/dive.h
View file

@ -212,7 +212,6 @@ extern fraction_t best_o2(depth_t depth, const struct dive *dive);
extern fraction_t best_he(depth_t depth, const struct dive *dive, bool o2narcotic, fraction_t fo2);
extern int get_surface_pressure_in_mbar(const struct dive *dive, bool non_null);
extern int calculate_depth_to_mbar(int depth, pressure_t surface_pressure, int salinity);
extern int depth_to_mbar(int depth, const struct dive *dive);
extern double depth_to_bar(int depth, const struct dive *dive);
extern double depth_to_atm(int depth, const struct dive *dive);