Wednesday, November 20, 2002

Best Timing call  to time some FP C++  code: Jim Stanton posted sample code on Queryperformancecounter to do the timing on wintechoffTopic, #include <iostream> #include <windows.h> int DoTest() { int i; i = 42; return i*15; } int DummyTest() { return 0; } int main() { __int64 i64Start; __int64 i64End; __int64 i64Overhead; __int64 i64Frequency; __int64 i64Elapsed; const int iIterations = 100000; int result; QueryPerformanceCounter((LARGE_INTEGER*)&i64Start); for (int i = 0; i < iIterations; ++i) result = DummyTest(); //subtract ;overhead of the loop/function call, .. QueryPerformanceCounter((LARGE_INTEGER*)&i64End); QueryPerformanceCounter((LARGE_INTEGER*)&i64Start); for (int i = 0; i < iIterations; ++i) result = DoTest(); QueryPerformanceCounter((LARGE_INTEGER*)&i64End); i64Elapsed = (i64End - i64Start) - i64Overhead; QueryPerformanceFrequency((LARGE_INTEGER*)&i64Frequency); std::cout << "Time elapsed was: " << (double)i64Elapsed / (double)i64Frequency << " seconds" << std::endl; } ----------------- looks cool to test the timing, huh!.   3:39:58 PM   comment_[] Essential .NET: Recently attended the 5 days intesive course on Essential .NET: Building applications and components with C# conducted by developmetor. The course was awesome. The instructor JasonW did a great job explaning the core concepts clearly, lot of examples and lot of concepts in 5 days.  I wish i could attend more trainning like these, but I cannot afford $2500 from my pocket everytime. Learning new things is good, It gives confidence!.It gives energy! 11:24:45 AM   comment_[]

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