| brians | 343bc11 | 2013-02-10 01:53:46 +0000 | [diff] [blame] | 1 | #ifndef AOS_COMMON_MATH_H_ |
| 2 | #define AOS_COMMON_MATH_H_ |
| 3 | |
| 4 | namespace aos { |
| 5 | |
| 6 | // Clips a value so that it is in [min, max] |
| Brian Silverman | ad9e000 | 2014-04-13 14:55:57 -0700 | [diff] [blame^] | 7 | static inline double Clip(double value, double min, double max) { |
| brians | 343bc11 | 2013-02-10 01:53:46 +0000 | [diff] [blame] | 8 | if (value > max) { |
| 9 | value = max; |
| 10 | } else if (value < min) { |
| 11 | value = min; |
| 12 | } |
| 13 | return value; |
| 14 | } |
| 15 | |
| Brian Silverman | ad9e000 | 2014-04-13 14:55:57 -0700 | [diff] [blame^] | 16 | template <typename T> |
| 17 | static inline int sign(T val) { |
| 18 | if (val > T(0)) { |
| 19 | return 1; |
| 20 | } else { |
| 21 | return -1; |
| 22 | } |
| 23 | } |
| 24 | |
| brians | 343bc11 | 2013-02-10 01:53:46 +0000 | [diff] [blame] | 25 | } // namespace aos |
| 26 | |
| 27 | #endif // AOS_COMMON_MATH_H_ |