Function abs

ciphercore-base/src/ops/long_division.rs:358–374

Returns (is_negative(binary_num), abs(binary_num)).

(binary_num: Node, is_signed: bool)

// Returns (is_negative(binary_num), abs(binary_num)).
fn abs(binary_num: Node, is_signed: bool) -> Result<(Node, Node)> {
    let g = binary_num.get_graph();
    if is_signed {
        let num_is_negative = is_negative(binary_num.clone())?;
        let abs = g.custom_op(
            CustomOperation::new(Mux {}),
            vec![
                num_is_negative.clone(),
                negative(binary_num.clone())?,
                binary_num,
            ],
        )?;
        Ok((num_is_negative, abs))
    } else {
        Ok((g.zeros(scalar_type(BIT))?, binary_num))
    }
}

#[cfg(test)]
mod tests {