MATLAB Function Versus MATLAB S-Function (processing speed)

2013 2 18
1 个回答
回答已采纳
5 次查看（30 天）

0 个投票

Simulink
Why block MATLAB FUNCTION is slower than block MATLAB S-Function in may model?
The task is the same.

请先登录，再回答此问题。

 采纳的回答

Kaustubha Govind
Kaustubha Govind 2013-2-19

0 个投票

When you say "MATLAB Function" block, do you mean the Embedded MATLAB Function block (the block icon has the MathWorks logo on it), or the Interpreted MATLAB Function block? Also, it would help if you post your code. Some functions (like FFT) may be faster if run in interpreted mode in MATLAB than with the Embedded MATLAB Function block, which generates C-code from the MATLAB functions. Some MATLAB implementations are highly optimized, and hence perform better than the generated C code.

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Ivan
Ivan 2013-2-20
My problem is a simple example in the picture.
http://i.ganjafoto.ru/1/96/63/1966358.jpg
Top S-function written in C + +. Lower Matlab function written in Matlab. Blocks of the same function, but the top is 4 times faster. Why? Maybe this is due to the creation of the wrapper in the case of the lower block? M-code consists of five lines, and 800 lines of the wrapper. wrapper slows down speed of model?

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Simulink Coder 的更多信息

产品

标签

Community Treasure Hunt

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

Start Hunting!

Translated by