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Tree: f18802bc46

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ardupilot/libraries/StorageManager

History

Gustavo Jose de Sousa 0d1d960899 StorageManager: remove unnecessary calculations on addr for next area ... When writting or reading a block, if the block doesn't fit the area where it begins, the next base address is always zero. Thus the calculations to define the next value of addr are unnecessary. Here's a quick validity proof using the previous calculations: First: Considering the case where the block doesn't fit it's first area: That means that (count + addr > length), what makes: count = length - addr; (1) So the following operations: addr += count; addr -= length; Are the same as doing: addr = addr + count - length; (2) Using (1) and (2) we have: addr = addr + length - addr - length = 0 Second: When the block fits the area where it's at: That means that variable count is not changed, thus (n -= count) evaluates to 0, which makes the loop exit. Another change was (b += count;) being moved after the condition to break the loop, since we just need to move the block pointer when it doesn't fit the first area.		10 years ago
..
examples/StorageTest	StorageManager: convert example from .pde to .cpp	10 years ago
StorageManager.cpp	StorageManager: remove unnecessary calculations on addr for next area	10 years ago
StorageManager.h	StorageManager: cope with a wider range of storage sizes	11 years ago