#include <stdio.h>

int main(void) {
  _Decimal64 d64 = 0.DD;

  d64 *= -1.DD;

  if(d64 != 0.DD) printf("!= 0\n");
  else printf("== 0\n");

  if(d64 != -0.DD) printf("!= -0\n");
  else printf("== -0\n");

  return 0;
}