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| c++ | |
| #include <iostream> | |
| #include <limits> | |
| /* | |
| This is supposed to be a small replication of | |
| what happens when my old code is opposed with | |
| millis() rollover. | |
| */ | |
| int main() | |
| { | |
| const unsigned long ulong_max = std::numeric_limits<unsigned long>::max(); | |
| std::cout << "Unsigned Long :: Max = " << ulong_max << std::endl; | |
| // PreviousTime was 120 ms ago from the 0 of unsigned long | |
| // I'm interpreting it like a clock. so 0, would | |
| // be the 12 in real world clock. | |
| unsigned long previousTime = ulong_max - 120; | |
| // timeNow is 12 ms o'time (because of rollover) | |
| unsigned long timeNow = 12; | |
| // deltaTime is the difference between timeNow and previousTime | |
| unsigned long deltaTime = timeNow - previousTime; | |
| /* | |
| Expected Logically: | |
| - DeltaTime should be: | |
| PreviousTime was 120 + 12 ago. | |
| PreviousTime = 132 | |
| Code Output: | |
| - Output = 133 | |
| */ | |
| std::cout << "deltaTime: " << deltaTime << std::endl; | |
| } |
