| 23 | namespace { |
| 24 | template <class Integer> |
| 25 | Integer string2signed(const std::string& s) |
| 26 | { Integer result = 0; |
| 27 | size_t index = 0; |
| 28 | if( s[0] == '-' ) |
| 29 | { ++index; |
| 30 | while( index < s.size() ) |
| 31 | result = Integer(10) * result - Integer(s[index++] - '0' ); |
| 32 | } |
| 33 | else |
| 34 | { while( index < s.size() ) |
| 35 | result = Integer(10) * result + Integer(s[index++] - '0' ); |
| 36 | } |
| 37 | return result; |
| 38 | } |
| 39 | template <class Integer> |
| 40 | Integer string2unsigned(const std::string& s) |
| 41 | { Integer result = 0; |