Function t_to_s_topp2 

pub fn t_to_s_topp2(
    s: &[f64],
    a: &[f64],
    t_s: &[f64],
    mode: InterpolationMode<'_>,
) -> Vec<f64>

Interpolate inverse mapping s(t) from a(s) and sampled t(s).

Modes

• UniformTimeGrid(t0, dt, include_final): generate uniform time samples;
• NonUniformTimeGrid(t_sample): use caller-provided increasing samples.

Input contract

• requires s.len() >= 2, a.len() == s.len(), t_s.len() == s.len();
• requires t_s strictly increasing.
• invalid input returns empty vector.

Output semantics

• output length matches requested sample count in each mode;
• for out-of-range time samples, output entries are NaN.

Returns

Returns sampled s(t) values according to mode.

Errors

This function does not return Result; invalid input or invalid mode settings are mapped to empty output.

Contract

• preserves requested sample order;
• never panics for malformed user input (falls back to empty vector).