Function fiat_crypto::p448_solinas_64::fiat_p448_opp

pub fn fiat_p448_opp(
    out1: &mut fiat_p448_loose_field_element,
    arg1: &fiat_p448_tight_field_element
)

The function fiat_p448_opp negates a field element.

Postconditions: eval out1 mod m = -eval arg1 mod m