Matlab coder and exponentiation

1 次查看（过去 30 天）
David Short
David Short 2015-3-27
评论： David Short 2015-3-30
I'm sure there is a way to get matlab coder to do A = B ^ C where all A, B and C are scalers, but for the life of me, I'm just not seeing it.
Every way I try and express it ends up with the error "Matrix power is not supported for code generation."
A = B(1) .^ C(1) isn't getting me where I want to go.
I can do it in C. I can do it in Matlab, I just can't get Matlab to do it in C.
  2 个评论
Konstantinos Sofos
Konstantinos Sofos 2015-3-27
A,B and C are matrices or scalars...i cannot understand the "scalers" that you wrote?
Rick Rosson
Rick Rosson 2015-3-27
Konstantinos, don't you think it's just a typo?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Ryan Livingston
Ryan Livingston 2015-3-28
This sounds like an installation issue. Can you check to see that the files:
fullfile(matlabroot,'toolbox','eml','lib','matlab','ops','mpower.m')
fullfile(matlabroot,'toolbox','eml','lib','matlab','ops','power.m')
exist in your MATLAB installation? Likely they do not as ^ should be supported for code generation.
If they are not present, reinstalling would be advised. Customer support should be able to help you get going again if the install doesn't seem to be successful.
If the files are present, try to run
restoredefaultpath
rehash toolboxcache
and see if codegen succeeds.
  1 个评论
David Short
David Short 2015-3-30
On a different machine a test case works with 2014b. Same test case is not working on my original machine with 2014a.
Either version or installation. Comment on this Answer David Short

请先登录，再进行评论。

更多回答（1 个）

James Tursa
James Tursa 2015-3-27
Have you tried A = exp( C * log(B) ) ?
  1 个评论
David Short
David Short 2015-3-30
As a work around this works. Thank you. I'm still interested in pursuing what the underlying cause is with not being able to use mpower from matlabcoder.
Thanks James!

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 MATLAB Coder 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by