Qsort issue with CVI 2012 in 64 bit mode

[blakney]

Possible CVI 2012 64 bit bug.

Qsort returns very slowly in CVI2012 in 64 bit release mode. Not sure if there are memory leaks or if function actually returns the correct answer as I fixed the problem before going back and isolating the issue to the code supplied. The issue seems to be resolved in CVI 2013.

In the example provided, an array is created, seeded, and sorted. Approximate timing results (with a chi by eye averaging) are given below for an array of 1e6 double values.

CVI 2012

32 bit debug                         32 bit release                                       64 bit debug                                    64 bit release

4.5 seconds                         0.32 seconds                                       4.3 seconds                                     44.0 seconds

CVI 2013

32 bit debug                         32 bit release                                       64 bit debug                                    64 bit release

2.8 seconds                          0.22 seconds                                      2.0 seconds                                     0.18 seconds

[Mike.F]

Hey,

Thank you for your feedback, I compiled your code and you are right. In CVI 2013 the problem seems to be solved. Unfortunately, I can't place a CAR (correction action request) for CVI 2012 because the problem has been addressed by our R&D department. 

Thanks again for your feedback.