+static void update_duration(duration_t *duration, int new)
+{
+ if (new)
+ duration->seconds = new;
+}
+
+static void update_temperature(temperature_t *temperature, int new)
+{
+ if (new) {
+ int old = temperature->mkelvin;
+
+ if (abs(old - new) > 1000)
+ temperature->mkelvin = new;
+ }
+}
+
+/*
+ * If you have more than 32 cylinders, you'd better have a 64-bit build.
+ * And if you have more than 64 cylinders, you need to use another tool,
+ * or fix this up to do something odd.
+ */
+static unsigned long fixup_pressure(struct dive *dive, struct sample *sample, unsigned long flags)
+{
+ unsigned long mask;
+ unsigned int pressure, index;
+ cylinder_t *cyl;
+
+ pressure = sample->cylinderpressure.mbar;
+ if (!pressure)
+ return flags;
+ index = sample->cylinderindex;
+ if (index >= MAX_CYLINDERS)
+ return flags;
+ cyl = dive->cylinder + index;
+ if (!cyl->start.mbar)
+ cyl->start.mbar = pressure;
+ /*
+ * If we already have an end pressure, without
+ * ever having seen a sample for this cylinder,
+ * that means that somebody set the end pressure
+ * by hand
+ */
+ mask = 1ul << index;
+ if (cyl->end.mbar) {
+ if (!(flags & mask))
+ return flags;
+ }
+ flags |= mask;
+
+ /* we need to handle the user entering beginning and end tank pressures
+ * - maybe even IF we have samples. But for now if we have air pressure
+ * data in the samples, we use that instead of the minimum
+ * if (!cyl->end.mbar || pressure < cyl->end.mbar)
+ */
+ cyl->end.mbar = pressure;
+ return flags;