Function imaxdiv 

#[unsafe(no_mangle)]
pub extern "C" fn imaxdiv(
    numer: intmax_t,
    denom: intmax_t,
) -> imaxdiv_t

See https://pubs.opengroup.org/onlinepubs/9799919799/functions/imaxdiv.html.

Computes numer / denom and numer % denom in a single operation.

Returns the struct imaxdiv_t, comprising both the quotient and remainder.