Struct TfcResult

pub struct TfcResult {
    pub nps: u64,
    pub value: f64,
    pub error: f64,
    pub fom: f64,
}

Tally fluctuation chart results

In the MCTAL file, records for the table follow on as many lines as needed.

<nps> <mean> <error> <fom>

• nps are the number of particle histories run
• mean is the tally mean
• error is the relative error
• fom is the tally Figure of Merit

These are stored in a vector under [TallyFluctuation] results.

Fields

nps: u64

Number of particles

value: f64

Average value

error: f64

Relative uncertainty

fom: f64

Figure-of-Merit value

Implementations

impl TfcResult

pub fn absolute_error(&self) -> f64

Absolute error on the result

For example:

let result = TfcResult {
    value: 50.0,
    error: 0.10,
    ..Default::default()
};
/// 10% relative error => 50.0 +/-5.0
assert_eq!(result.absolute_error(), 5.0);

pub fn relative_error(&self) -> f64

Relative error on the result

The MCNP tally outputs are provided and stored as the relative uncertainty anyway. However, having both absolute_error() and relative_error() methods makes intent explicit.

For example:

let result = TfcResult {
    value: 50.0,
    error: 0.10,
    ..Default::default()
};

/// 10% relative error => 50.0 +/-5.0
assert_eq!(result.relative_error(), 0.1);
assert_eq!(result.absolute_error(), 5.0);

Trait Implementations

impl Debug for TfcResult

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

Formats the value using the given formatter.

impl Default for TfcResult

fn default() -> TfcResult

Returns the “default value” for a type.