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HI,
I have a question concerning the use of Vector Mathematical Functions. The documentation does not contain a hint whether one can apply the same argument twice [in-place operation] without any side effects. For example for two vectors a, b the operation a = a + b should be computed via
vdadd( n, a, b, a ); [in-place operation]
instead of creating a working array y first and copy the result to array a again:
[plain]y = new double
vdadd( n, a, b, y );
copy(source: y, destination: a);[/plain]
I have tested it and it works for vdadd. My question is is not restricted to vdadd, more general to all other Mathematical functions as for example vdsqr, vzconj, vdpow etc. I can test each function before I will use it but this is rather time consuming and can change from release to release of the MKL Library.
Thanks in advance,
Markus
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Hi Markus,
It is true that all of the VML can work with the in-plance operation. Check the document here:
Thanks,
Chao
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Hi Chao,
thank you very much, I was blind...
Markus
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I think the updated place to look for it is:
Intel MKL Developer Reference - Vector Mathematical Functions.
At least the In Place support holds for Intel MKL 2018 Update 2.

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