Calling MASM PROC from C++/CLI in x64 mode yields unexpected performance problems
问题 This is my first question here... I'm writing an arbitrary precision integer class to be used in C# (64-bit). Currently I'm working on the multiplication routine, using a recursive divide-and-conquer algorithm to break down the multi-bit multiplication into a series of primitive 64-to-128-bit multiplications, the results of which are recombined then by simple addition. In order to get a significant performance boost, I'm writing the code in native x64 C++, embedded in a C++/CLI wrapper to