Function modify_weights 

pub fn modify_weights<S: AsRef<str>>(
    weights: &Array2<f64>,
    status: &[S],
    values: &[S],
    multipliers: &[f64],
) -> Array2<f64>

Multiply the weights of every probe (row) whose status equals values[k] by multipliers[k]. multipliers is recycled when it has length 1. Returns a new matrix; weights is left unchanged.

Panics if status.len() differs from weights.nrows(), or if multipliers is neither length 1 nor values.len() — mirroring the stop() guards in limma.