How to count the number of elements in a vector that satisfy some criterions?

[yunfenglee13]

Hello,

I am a beginner of MKL. In my research, I need to count the number of elements in a large vector

that satisfy somecriterion. For example, counting the number of elements whose absolute

values are less than 50. I checked all functions and didn't find the one that can do this job.

I would appreciate if you have any good suggestion. Thanks in advance.

YL

[Gennady_F_Intel]

Hello YL.

MKL doesn't contains similar routines. That function is pretty simple and you can try to develop it by yourself.

Or I 'drecommend to tryippsCountInRange function from another Intel Performance Library - IPP. That function

computes the number of elements of the vector whose values are in the specified range.

--Gennady

[yunfenglee13]

Gennady,

Thank you for your suggestion. I tested ippsCountInRange function. Except that this function only supports integer input and I have to convert the data type before calling it, it works well and it is fast. Thanks,

YL