__float128 xxx = 2.0;
__float128 yyy = 3.0;
__float128 zzz = xxx / yyy;
char zzz_buf[64];
printf("sizeof(zzz) = %lu bytes\n", sizeof(zzz));
quadmath_snprintf(zzz_buf, sizeof(zzz_buf), "%.34Qf", zzz);
printf("zzz = %s\n", zzz_buf);
random ( ) → double precision