BEGIN {
N = 22/7
printf(" %.15f\n", N)
printf("* %.10f\n", N) # default
ROUNDMODE="N"; printf("N %.10f\n", N)
ROUNDMODE="U"; printf("U %.10f\n", N)
ROUNDMODE="D"; printf("D %.10f\n", N)
ROUNDMODE="Z"; printf("Z %.10f\n", N)
N = -N
ROUNDMODE="N"; printf("N %.10f\n", N)
ROUNDMODE="U"; printf("U %.10f\n", N)
ROUNDMODE="D"; printf("D %.10f\n", N)
ROUNDMODE="Z"; printf("Z %.10f\n", N)
}