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

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yunfenglee13

Beginner

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01-23-2011
05:33 PM

18 Views

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

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

2 Replies

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Hello YL.

Gennady_F_Intel

Moderator

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01-23-2011
10:55 PM

18 Views

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

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Gennady,

yunfenglee13

Beginner

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01-24-2011
07:00 PM

18 Views

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

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