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Improve the code handling air temperature

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Better helper functions make for easier to understand code.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Linus Torvalds 2013-02-14 15:18:48 -08:00 • committed by Dirk Hohndel
parent b4c2fcc802
commit c6da79e1b0
3 changed files with 24 additions and 26 deletions
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31
dive.c
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@ -484,34 +484,35 @@ static void fixup_watertemp(struct dive *dive)
dive->watertemp.mkelvin = (sum + nr / 2) / nr;
}
void fixup_airtemp(struct dive *dive)
/*
* What do the dive computers say the air temperature is?
*/
unsigned int dc_airtemp(struct divecomputer *dc)
{
struct divecomputer *dc;
int sum = 0, nr = 0;
if (dive->airtemp.mkelvin)
return;
for_each_dc(dive, dc) {
do {
if (dc->airtemp.mkelvin) {
sum += dc->airtemp.mkelvin;
nr++;
}
}
if (nr)
dive->airtemp.mkelvin = (sum + nr / 2) / nr;
} while ((dc = dc->next) != NULL);
if (!nr)
return 0;
return (sum + nr / 2) / nr;
}
static void fixup_airtemp(struct dive *dive)
{
if (!dive->airtemp.mkelvin)
dive->airtemp.mkelvin = dc_airtemp(&dive->dc);
}
/* zero out the airtemp in the dive structure if it was just created by
* running fixup on the dive. keep it if it had been edited by hand */
static void un_fixup_airtemp(struct dive *a)
{
temperature_t temp;
temp.mkelvin = a->airtemp.mkelvin;
a->airtemp.mkelvin = 0;
fixup_airtemp(a);
if (a->airtemp.mkelvin && a->airtemp.mkelvin != temp.mkelvin)
a->airtemp.mkelvin = temp.mkelvin;
else
if (a->airtemp.mkelvin && a->airtemp.mkelvin == dc_airtemp(&a->dc))
a->airtemp.mkelvin = 0;
}