fix(significant_digits): ignore dot completely

src/main.rs

@@ -28,7 +28,7 @@ pub fn parse_and_calc(s: &str) -> Float {
 }
 
 pub fn get_significant_digits(n: &Float) -> usize {
-    let raw_string = format!("{n}");
+    let raw_string: String = format!("{n}").chars().filter(|c| *c != '.').collect();
 
     let mut significant_digits = raw_string.len() - 1;
     let mut consecutive_zeros = 0;
@@ -55,12 +55,12 @@ pub fn get_significant_digits(n: &Float) -> usize {
         }
 
         if !raw_string[i..raw_string.len()].contains(|c| matches!(c, '1'..='9')) {
-            significant_digits = i + 1;
+            significant_digits = i;
             break;
         }
     }
 
-    significant_digits - raw_string.chars().filter(|c| *c == '.').count()
+    significant_digits
 }
 
 #[test]
@@ -71,8 +71,12 @@ fn test_get_significant_digits() {
     assert_eq!(many_nines.to_f64(), 44.0084);
     let zero_nine_zero = parse_and_calc("2+12321(5+123)");
     assert_eq!(zero_nine_zero.to_f64(), 1577090.0);
+    let test_4 =
+        parse_and_calc("12.0096 + 1.00784 * 3 + 12.0096 + 1.00784 * 2 + 15.9994 + 1.00784");
+    assert_eq!(test_4.to_f64(), 46.06564);
 
     assert_eq!(get_significant_digits(&many_zeros), 8);
     assert_eq!(get_significant_digits(&many_nines), 6);
     assert_eq!(get_significant_digits(&zero_nine_zero), 6);
+    assert_eq!(get_significant_digits(&test_4), 7);
 }