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

Fix potential double/float to int rounding errors

Browse source 
Not using lrint(f) when converting double/float to int
creates rounding errors.
This error was detected by TestParse::testParseDM4 failure
on Windows. It was creating rounding inconsistencies
on Linux too, see change in TestDiveDM4.xml.

Enable -Wfloat-conversion for gcc version greater than 4.9.0

Signed-off-by: Jeremie Guichard <djebrest@gmail.com>
This commit is contained in:
Jeremie Guichard 2017-03-09 23:07:30 +07:00
parent 406e4287eb
commit 2b06a0b223
20 changed files with 109 additions and 100 deletions
Download patch file Download diff file Expand all files Collapse all files

2
core/dive.h
View file

@ -499,7 +499,7 @@ static inline depth_t gas_mnd(struct gasmix *mix, depth_t end, struct dive *dive
pressure_t ppo2n2;
ppo2n2.mbar = depth_to_mbar(end.mm, dive);
double maxambient = ppo2n2.mbar / (1 - get_he(mix) / 1000.0);
int maxambient = lrint(ppo2n2.mbar / (1 - get_he(mix) / 1000.0));
rounded_depth.mm = lrint(((double)mbar_to_depth(maxambient, dive)) / roundto) * roundto;
return rounded_depth;
}