Function t_to_s_topp3 

pub fn t_to_s_topp3(
    s: &[f64],
    profile: Topp3ProfileRef<'_>,
    t_s: &[f64],
    mode: InterpolationMode<'_>,
) -> Result<Vec<f64>, CoppError>

Interpolate inverse mapping s(t) from a TOPP3/COPP3 profile 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, profile slice lengths equal to s.len(), and t_s.len() == s.len();
• requires t_s strictly increasing;
• all profile and time-grid values must be finite.

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 under the requested interpolation mode.

Errors

Returns CoppError::InvalidInput when dimensions, stationary counts, monotonicity, positivity, or numeric finiteness requirements are violated.

Contract

• preserves caller time-sample ordering.
• malformed input is reported as CoppError::InvalidInput.