| 1700 | } |
| 1701 | |
| 1702 | static inline bool isvowel(char ch) |
| 1703 | { |
| 1704 | ch = std::tolower(ch); |
| 1705 | for (const char* v = "aeiou"; *v != '\0'; ++v) { |
| 1706 | if (*v == ch) { |
| 1707 | return true; |
| 1708 | } |
| 1709 | } |
| 1710 | return false; |
| 1711 | } |
| 1712 | |
| 1713 | static inline double safe_divide(double a, double b) |
| 1714 | { |