sized = td->o.file_size_high - td->o.file_size_low;
ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
ret += td->o.file_size_low;
sized = td->o.file_size_high - td->o.file_size_low;
ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0)));
ret += td->o.file_size_low;