在大多数情况下，memcpy 都比循环赋值快。但是，在某些特殊情况下，循环赋值可能会比 memcpy 更快。因此...
memcpy vs. for loop (for copying multidimensional arrays) Shallini Dasoju Prodigy50points Hi, I replaced the following for loop with a memcpy function. I see that the performance has degraded (in terms of increased number of clock cycles) for copying multi-dimensional arr...
loop的方式结果跟memcpy性能相同，说明编译器还是很聪明的，将loop上无依赖的内存操作直接优化成向量操作，...
现代CPU的缓存命中率较高，加上DEMO的数据量大，因此考虑本场景下主要读写都在缓存里发生，而即便读写...
I would prefer std::copy for this. Also, I'm not sure I understand why there is a loop on line 1. Isn't it a question of line 2 vs. line 3? Last edited on Nov 28, 2011 at 8:35pm Nov 28, 2011 at 9:19pm Gaminic (1621) For regular int arrays, the std::copy metho...
Security best practices and alternatives to the memcpy C function widely used for strings, arrays, and pointers.
example the RAM used remains 0 in the memory map. I know I am a bit borderline with space if I choose to run all the sections from RAM, can you please tell me what I need to do to see it in the map file again, and what the current recommended method ...
C++ - memcpy vs for loop - What's the proper way to, A simple loop is slightly faster for about 10-20 bytes and less (It's a single compare+branch, see OP_T_THRES ), but for larger sizes, memcpy is faster and portable. Additionally, if the amount of memory you want to copy is...
Error: Cannot find an overload for 'contains' that accepts an argument type in while loop Why am I getting this error: Cannot find an overload for 'contains' that accepts an argument type '[Vetex], Vertex' Your Vertex class should confirm to Equatable protocol. This is a good tutorial...
(Unfortunately, I can't find decent examples, but these will do). Contrast the memcpy and memmove implementations shown here. memcpy just loops, while memmove performs a test to determine which direction to loop in to avoid corrupting the data. These implementations are rather simple. Most high...