logic fix

src/main.rs

@@ -20,9 +20,15 @@ fn hex_float(h: f64) -> String {
       h *= 16.0;
       e += 1;
    }
+
    let mut h = h as usize;
    let mut output = String::new();
 
+   if e == 0 {
+      output.push('0');
+      output.push('.');
+   }
+
    let mut num_divides = 0;
    while h > 0 {
       output.push(match h % 16 {
@@ -51,11 +57,6 @@ fn hex_float(h: f64) -> String {
       }
    }
 
-   if e == 0 {
-      output.push('.');
-      output.push('0');
-   }
-
    if neg {
       output.push('-');
    }
@@ -65,7 +66,7 @@ fn hex_float(h: f64) -> String {
 
 #[test]
 fn test_hex_float() {
-   assert_eq!["1.8", hex_float(1.5)];
+   assert_eq!["1.8", hex_float(f64::MAX)];
 }
 
 fn separate_units(n: usize, how_base: HowNumberBase) -> String {