This article compares the performance of two major functions in C for memory block transfer: memmove and memcpy.
Both functions have the same parameters but differ in how they handle overlapping memory blocks; memcpy does not support overlapping blocks, while memmove does.
The article recommends using memcpy for faster performance when the memory blocks do not overlap, and memmove when they might overlap, ensuring safer data transfer at a slightly slower speed.
Testing and understanding system-specific performance differences is key to choosing the best function for different scenarios.
The decision should consider the balance between speed and safety, with emphasis on avoiding data corruption.
Overall, this blog helps programmers make informed decisions on using memmove vs memcpy in C based on performance and memory block characteristics.