Function between_f64_to 

pub fn between_f64_to(
    lhs: &[f64],
    rhs: &[f64],
    mask: Option<&Bitmask>,
    has_nulls: bool,
    output: &mut Bitmask,
) -> Result<(), KernelError>

Zero-allocation variant: writes directly to caller’s output buffer.

Test if LHS values fall between RHS min/max bounds. The output Bitmask must have capacity >= lhs.len().