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Dive information: fix surface interval calculation

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The old surface interval calculation had fundamental issues:

1) process_all_dives(), which calculates the statistics over *all*
   dives was used to get the pointer to the previous dive.
2) If two dives in the table had the same time, one of those would
   have been considered the "previous" dive.
3) If the dive, for which the surface interval is calculated is
   not yet in the table, no previous dive would be determined.

Fix all this by creating a get_surface_interval() function and
removing the "get previous dive" functionality of process_all_dives().
Remove the process_all_dives() call from TabDiveInformation::updateData().

Reported-by: Jan Mulder <jlmulder@xs4all.nl>
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2018-10-06 09:21:27 +02:00 • committed by Dirk Hohndel
parent cec0b70365
commit c32e71e64d
7 changed files with 38 additions and 23 deletions
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10
core/statistics.c
View file

@ -3,7 +3,7 @@
*
* core logic for the Info & Stats page -
* char *get_minutes(int seconds);
* void process_all_dives(struct dive *dive, struct dive **prev_dive);
* void process_all_dives();
*/
#include "gettext.h"
#include <string.h>
@ -91,7 +91,7 @@ char *get_minutes(int seconds)
return buf;
}
void process_all_dives(struct dive *dive, struct dive **prev_dive)
void process_all_dives()
{
int idx;
struct dive *dp;
@ -105,7 +105,6 @@ void process_all_dives(struct dive *dive, struct dive **prev_dive)
dive_trip_t *trip_ptr = 0;
unsigned int size, tsize;
*prev_dive = NULL;
memset(&stats, 0, sizeof(stats));
if (dive_table.nr > 0) {
stats.shortest_time.seconds = dive_table.dives[0]->duration.seconds;
@ -152,11 +151,6 @@ void process_all_dives(struct dive *dive, struct dive **prev_dive)
/* this relies on the fact that the dives in the dive_table
* are in chronological order */
for_each_dive (idx, dp) {
if (dive && dp->when == dive->when) {
/* that's the one we are showing */
if (idx > 0)
*prev_dive = dive_table.dives[idx - 1];
}
process_dive(dp, &stats);
/* yearly statistics */