Function _get_values_diff

crates/openquant/src/structural_breaks.rs:121–134

(
    test_type: &str,
    series: &[f64],
    index: usize,
    ind: usize,
)

}

pub fn _get_values_diff(
    test_type: &str,
    series: &[f64],
    index: usize,
    ind: usize,
) -> StructuralBreakResult<f64> {
    let left = series.get(index).ok_or(StructuralBreakError::IndexOutOfBounds)?;
    let right = series.get(ind).ok_or(StructuralBreakError::IndexOutOfBounds)?;
    match test_type {
        "one_sided" => Ok(left - right),
        "two_sided" => Ok((left - right).abs()),
        _ => Err(StructuralBreakError::InvalidTestType(test_type.to_string())),
    }
}

pub fn _get_betas(
    _x: &[Vec<f64>],