Function fiat_crypto::p256_64::fiat_p256_nonzero

pub fn fiat_p256_nonzero(out1: &mut u64, arg1: &[u64; 4])

The function fiat_p256_nonzero outputs a single non-zero word if the input is non-zero and zero otherwise.

Preconditions: 0 ≤ eval arg1 < m Postconditions: out1 = 0 ↔ eval (from_montgomery arg1) mod m = 0

Input Bounds: arg1: [[0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff], [0x0 ~> 0xffffffffffffffff]] Output Bounds: out1: [0x0 ~> 0xffffffffffffffff]