macro_rules! modinv_impls {
    ($sname: ident) => {
    };
}

#[cfg(test)]
macro_rules! generate_modinv_tests {
    ($sname: ident, $tname: ident, $mname: ident) => {
    };
    (ignore $sname: ident, $tname: ident, $mname: ident) => {
    };
    (body $sname: ident, $tname: ident, $mname: ident) => {
    };
}