comparison: src/generics/functions.h
src/generics/functions.h
- changeset 1411
- b48f3fd2664b
- parent 1390
- 3eace926af7f
- child 1419
- f7c53002a990
equal
deleted
inserted
replaced
| 1410:e76e219c48e9 | 1411:b48f3fd2664b |
|---|---|
| 116 { | 116 { |
| 117 return vector.size(); | 117 return vector.size(); |
| 118 } | 118 } |
| 119 | 119 |
| 120 /* | 120 /* |
| 121 * Extracts the sign of x. | 121 * Extracts the sign of 'value'. |
| 122 */ | 122 * From: https://stackoverflow.com/q/1903954 |
| 123 template<typename T> | 123 */ |
| 124 T sign(T x) | 124 template<typename T> |
| 125 { | 125 int sign(T value) |
| 126 if (isZero(x)) | 126 { |
| 127 return {}; | 127 return (0 < value) - (value < 0); |
| 128 else | |
| 129 return x / qAbs(x); | |
| 130 } | |
| 131 | |
| 132 template<> | |
| 133 inline int sign(int x) | |
| 134 { | |
| 135 if (x == 0) | |
| 136 return 0; | |
| 137 else | |
| 138 return x / qAbs(x); | |
| 139 } | 128 } |
| 140 | 129 |
| 141 /* | 130 /* |
| 142 * Returns the maximum of a single parameter (the parameter itself). | 131 * Returns the maximum of a single parameter (the parameter itself). |
| 143 */ | 132 */ |
