Function batch_div 

pub fn batch_div(
    lhs: &[f64],
    rhs: &[f64],
    result: &mut [f64],
) -> Result<(), BatchError>

Batch element-wise division: result[i] = lhs[i] / rhs[i].

Division-by-zero follows IEEE-754: x / 0 → ±Inf, 0 / 0 → NaN.

Errors

Returns BatchError::LengthMismatch when any of the three slices has a different length.