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c++ Programming Glossary: secondsWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array std sort data data arraySize the code runs in 11.54 seconds. With the sorted data the code runs in 1.93 seconds. Initially.. 11.54 seconds. With the sorted data the code runs in 1.93 seconds. Initially I thought this might be just a language or compiler.. @ 3.5 GHz C Visual Studio 2010 x64 Release Branch Random seconds 11.777 Branch Sorted seconds 2.352 Branchless Random seconds..
C++ Timer function to provide time in nano seconds http://stackoverflow.com/questions/275004/c-timer-function-to-provide-time-in-nano-seconds Timer function to provide time in nano seconds I wish to calculate the time it took for an API to return a.. The time taken for such an action is in the space of nano seconds. As the API is a C class function I am using the timer.h to.. printf diff ' n' return 0 The above code gives the time in seconds I wish to get the same in nano seconds and with more precision...
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops bit on a Intel Core 2 Duo x64 the first example takes 5.5 seconds and the double loop example takes only 1.9 seconds. My question.. 5.5 seconds and the double loop example takes only 1.9 seconds. My question is Please refer to the my rephrased question at.. for int j 0 j n j c1 j d1 j #endif clock_t end clock cout seconds double end start CLOCKS_PER_SEC endl system pause return 0 Benchmark..
Convert seconds to Days, Minutes and Seconds http://stackoverflow.com/questions/2419562/convert-seconds-to-days-minutes-and-seconds seconds to Days Minutes and Seconds Hey everyone. I've continuing to learn C and I've been set.. of converting seconds to format as the Days Minutes and Seconds. For example 31600000 365 days 46 minutes 40 seconds. using..
parsing of date/time from string (boost?) http://stackoverflow.com/questions/3786201/parsing-of-date-time-from-string-boost optional 2003 02 11 time may be missing Needed Output Seconds since Epoch 1970 01 01 00 00 00 or some other fixed point. Bonus..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle start uint64 ops 48 1000 iterations tds 2 cout Seconds secs endl cout FP Ops ops endl cout FLOPs ops secs endl double.. Compiled with Visual Studio 2010 SP1 x64 Release Seconds 55.5104 FP Ops 960000000000 FLOPs 1.7294e 010 sum 2.22652 The.. Compiled with Visual Studio 2010 SP1 x64 Release Seconds 117.202 FP Ops 7680000000000 FLOPs 6.55279e 010 sum 17.8122..
What is the fastest Dijkstra implementation you know (in C++)? http://stackoverflow.com/questions/938338/what-is-the-fastest-dijkstra-implementation-you-know-in-c but a order of exponent. It reduced my runtime form 30 Seconds to less than 2. I can not find this modification in any literature...
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