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difference between lapacke and lapack

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c++

lapack

lapacke

I wonder what is the difference between LAPACKE and LAPACK. I want to do Eigen analysis with QZ decomposition, but I'm not sure if I should start with LAPACKE or LAPACK. I appreciate any help.

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user3405291 Avatar asked Nov 11 '14 22:11

user3405291

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2 Answers

LAPACKE is the C wrapper for the standard F90 LAPACK library. Honestly, its easier (and more efficient) to do things directly with LAPACK just as long as you store things column-major. LAPACKE ends up calling (in some fashion) the LAPACK routines anyways.

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Dave Williams Avatar answered Oct 01 '22 05:10

Dave Williams

You probably want to use LAPACKE as it frees you from writing helpers for converting from/to row-major mode to column major mode for matrices before/after LAPACK calls.

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Kostya Avatar answered Oct 01 '22 04:10

Kostya
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