- dropin = atof(getenv("DROPIN") ?: "0");
- dropout = atof(getenv("DROPOUT") ?: "0");
- dropfrom = atoi(getenv("DROPFROM") ?: "0");
- dropto = atoi(getenv("DROPTO") ?: "0");
- reorder = atof(getenv("REORDER") ?: "0");
- reorder_dist = atoi(getenv("REORDER_DIST") ?: "10");
+ if(getenv("DROPIN")) dropin = atof(getenv("DROPIN"));
+ if(getenv("DROPOUT")) dropout = atof(getenv("DROPOUT"));
+ if(getenv("DROPFROM")) dropfrom = atoi(getenv("DROPFROM"));
+ if(getenv("DROPTO")) dropto = atoi(getenv("DROPTO"));
+ if(getenv("REORDER")) reorder = atof(getenv("REORDER"));
+ if(getenv("REORDER_DIST")) reorder_dist = atoi(getenv("REORDER_DIST"));