C语言计算代码执行所耗CPU时钟周期

LARGE_INTEGER _start = { 0 }, _end = { 0 };__asm{  rdtsc  mov dword ptr [_start.LowPart], eax  mov dword ptr[_start.HighPart], edx} //your code here __asm{  rdtsc  mov dword ptr [_end.LowPart], eax  mov dword ptr[_end.HighPart], edx} long interval = static_cast<long>(_end.QuadPart - _start.QuadPart);