Minor fixes

src/main.rs

@@ -50,7 +50,7 @@ fn main() {
     }
 
     let mut seed: f64 = opts.seed;
-    if seed == 0.0 {
+    if seed.abs() < 0.00001 {
         seed = rand::random::<f64>() * 1_000_000.0;
     }