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pressure interpolation: get rid of pointless and confusing code

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In the function fill_missing_tank_pressures(), we only ever call
get_pr_interpolate_data() if "pressure" is zero.  So passing it in as an
argument, and then testing whether it is zero or not, is just totally
pointless, and only obfuscates things.

This whole thing seems to be due to people editing the code over time,
with the tests becoming superfluous as the code around it changed, and
nobody looking at whether it actually made sense any more.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Linus Torvalds 2016-02-21 15:09:46 -08:00 • committed by Dirk Hohndel
parent 5da9486533
commit 1f7f3c4af5
1 changed files with 4 additions and 16 deletions
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20
subsurface-core/gaspressures.c
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@ -171,7 +171,7 @@ void dump_pr_interpolate(int i, pr_interpolate_t interpolate_pr)
#endif
static struct pr_interpolate_struct get_pr_interpolate_data(pr_track_t *segment, struct plot_info *pi, int cur, int pressure)
static struct pr_interpolate_struct get_pr_interpolate_data(pr_track_t *segment, struct plot_info *pi, int cur)
{ // cur = index to pi->entry corresponding to t_end of segment;
struct pr_interpolate_struct interpolate;
int i;
@ -194,19 +194,11 @@ static struct pr_interpolate_struct get_pr_interpolate_data(pr_track_t *segment,
if (entry->sec == segment->t_start) {
interpolate.acc_pressure_time = 0;
interpolate.pressure_time = 0;
if (pressure)
interpolate.start = pressure;
continue;
}
if (i < cur) {
if (pressure) {
interpolate.start = pressure;
interpolate.acc_pressure_time = 0;
interpolate.pressure_time = 0;
} else {
interpolate.acc_pressure_time += entry->pressure_time;
interpolate.pressure_time += entry->pressure_time;
}
interpolate.acc_pressure_time += entry->pressure_time;
interpolate.pressure_time += entry->pressure_time;
continue;
}
if (i == cur) {
@ -215,10 +207,6 @@ static struct pr_interpolate_struct get_pr_interpolate_data(pr_track_t *segment,
continue;
}
interpolate.pressure_time += entry->pressure_time;
if (pressure) {
interpolate.end = pressure;
break;
}
}
return interpolate;
}
@ -299,7 +287,7 @@ static void fill_missing_tank_pressures(struct dive *dive, struct plot_info *pi,
}
// If there is a valid segment but no tank pressure ..
interpolate = get_pr_interpolate_data(segment, pi, i, pressure); // Set up an interpolation structure
interpolate = get_pr_interpolate_data(segment, pi, i); // Set up an interpolation structure
if(dive->cylinder[cyl].cylinder_use == OC_GAS) {
/* if this segment has pressure_time, then calculate a new interpolated pressure */