GtkWidget *o2, *gasmix_button;
};
+/* we want bar - so let's not use our unit functions */
static int convert_pressure(int mbar, double *p)
{
int decimals = 1;
double pressure;
- pressure = mbar / 1000.0;
- if (mbar) {
- if (output_units.pressure == PSI) {
- pressure *= 14.5037738; /* Bar to PSI */
- decimals = 0;
- }
+ if (output_units.pressure == PSI) {
+ pressure = mbar_to_PSI(mbar);
+ decimals = 0;
+ } else {
+ pressure = mbar / 1000.0;
}
+
*p = pressure;
return decimals;
}
double volume, pressure;
volume = ml / 1000.0;
- pressure = mbar / 1000.0;
if (mbar) {
if (output_units.volume == CUFT) {
- volume /= 28.3168466; /* Liters to cuft */
- volume *= pressure / 1.01325;
+ volume = ml_to_cuft(ml);
+ volume *= bar_to_atm(mbar / 1000.0);
}
+
if (output_units.pressure == PSI) {
- pressure *= 14.5037738; /* Bar to PSI */
+ pressure = mbar_to_PSI(mbar);
decimals = 0;
- }
+ } else
+ pressure = mbar / 1000.0;
}
*v = volume;
*p = pressure;
int mbar, ml;
if (output_units.pressure == PSI) {
- pressure /= 14.5037738;
- start /= 14.5037738;
- end /= 14.5037738;
+ pressure = psi_to_bar(pressure);
+ start = psi_to_bar(start);
+ end = psi_to_bar(end);
}
if (pressure && output_units.volume == CUFT) {
- volume *= 28.3168466; /* CUFT to liter */
- volume /= pressure / 1.01325;
+ volume = cuft_to_l(volume);
+ volume /= bar_to_atm(pressure);
}
ml = volume * 1000 + 0.5;
/* Is it in cuft and psi? */
if (psi) {
- double bar = 0.0689475729 * psi;
- double airvolume = 28316.8466 * size;
- double atm = bar / 1.01325;
+ double bar = psi_to_bar(psi);
+ double airvolume = cuft_to_l(size) * 1000.0;
+ double atm = bar_to_atm(bar);
ml = airvolume / atm + 0.5;
mbar = bar*1000 + 0.5;