Make Chips, Mult and Score unsigned and protect against overflow (#212)

--------- Co-authored-by: MathisMartin31 <mathis.martin31@gmail.com>
2025-11-20 12:39:15 +02:00
parent 47b1bac31f
commit 2fb41e533c
6 changed files with 74 additions and 38 deletions
@@ -14,3 +14,26 @@ int int_arr_max(int int_arr[], int size)

    return max;
 }
+
+// Avoid uint overflow when add/multiplying score
+
+uint32_t u32_protected_add(uint32_t a, uint32_t b)
+{
+    return (a > (UINT32_MAX - b)) ? UINT32_MAX : (a + b);
+}
+    
+uint16_t u16_protected_add(uint16_t a, uint16_t b)
+{
+    return (a > (UINT16_MAX - b)) ? UINT16_MAX : (a + b);
+}
+
+uint32_t u32_protected_mult(uint32_t a, uint32_t b)
+{
+    return (a == 0 || b == 0) ? 0 : (a > (UINT32_MAX / b) ? UINT32_MAX : a * b);
+}
+
+uint16_t u16_protected_mult(uint16_t a, uint16_t b)
+{
+    return (a == 0 || b == 0) ? 0 : (a > (UINT16_MAX / b) ? UINT16_MAX : a * b);
+
+}