Enum PressureReferenceMode 

pub enum PressureReferenceMode {
    Absolute,
    Qnh,
}

Whether a station-pressure input is already absolute (station) pressure, or a sea-level- corrected altimeter setting (QNH / “barometer” reading) that must be reduced to station pressure at the shooter’s altitude before use (MBA-1397).

Kestrel, AB Mobile, Shooter, JBM, and Hornady 4DOF all let the user declare which one they are entering. Previously this engine only supported Absolute — an entered sea-level-corrected barometer/METAR value at a real altitude was silently treated as station pressure, over-stating air density and under-stating drop.

Variants

Absolute

The input is already absolute station pressure — today’s meaning, and the default, so every existing caller that never sets this is byte-identical to pre-MBA-1397 behavior.

Qnh

The input is a sea-level-corrected altimeter setting (QNH) and must be reduced to station pressure at the target altitude via reduce_qnh_to_station_pressure.

Trait Implementations

impl Clone for PressureReferenceMode

fn clone(&self) -> PressureReferenceMode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PressureReferenceMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PressureReferenceMode

fn default() -> PressureReferenceMode

Returns the “default value” for a type.

impl PartialEq for PressureReferenceMode

fn eq(&self, other: &PressureReferenceMode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ValueEnum for PressureReferenceMode

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.

impl Copy for PressureReferenceMode

impl Eq for PressureReferenceMode

impl StructuralPartialEq for PressureReferenceMode