Add goals

big_number.gd

@@ -123,22 +123,35 @@ func divide(other: BigNumber) -> BigNumber:
 
 ## Returns 1 if this > other, -1 if this < other, 0 if equal
 func compare_to(other: BigNumber) -> int:
-	if mantissa == 0.0 and other.mantissa == 0.0: return 0
-	
+	if mantissa == 0.0 and other.mantissa == 0.0:
+		return 0
+
+	# Handle zero explicitly before sign/exponent checks.
+	if mantissa == 0.0:
+		return -1 if other.mantissa > 0.0 else 1
+	if other.mantissa == 0.0:
+		return 1 if mantissa > 0.0 else -1
+
 	# Handle signs
-	if mantissa > 0 and other.mantissa <= 0: return 1
-	if mantissa < 0 and other.mantissa >= 0: return -1
-	
+	if mantissa > 0 and other.mantissa < 0:
+		return 1
+	if mantissa < 0 and other.mantissa > 0:
+		return -1
+
 	# Both are same sign. Compare exponents first.
 	var sign_mult: int = 1 if mantissa > 0 else -1
-	
-	if exponent > other.exponent: return sign_mult
-	if exponent < other.exponent: return -sign_mult
-	
+
+	if exponent > other.exponent:
+		return sign_mult
+	if exponent < other.exponent:
+		return -sign_mult
+
 	# Exponents are equal, compare mantissas
-	if mantissa > other.mantissa: return 1
-	if mantissa < other.mantissa: return -1
-	
+	if mantissa > other.mantissa:
+		return 1
+	if mantissa < other.mantissa:
+		return -1
+
 	return 0
 
 func is_greater_than(other: BigNumber) -> bool: