devilutionX-ZeroTierOne/ext/ed25519-amd64-asm/fe25519_getparity.c

#include "fe25519.h"

unsigned char fe25519_getparity(const fe25519 *x)
{
  fe25519 t = *x;
  fe25519_freeze(&t);
  return (unsigned char)t.v[0] & 1;
}