How do my matlab r2009b convert matlab codes to c?

I want to develop dsp code over matlab ,I hear that matlab can convert .m code to .c code ,How can I do it ?

Answer 1

[Kaustubha Govind]

You will need to get the MATLAB Coder product. Please see the "Videos & Examples" and Webinars sections for demonstrations of the product.

Answer 2

[Walter Roberson]

As was already indicated to you in http://www.mathworks.co.uk/matlabcentral/answers/46298-why-did-my-matlab-of-r2009b-does-not-have-function-coder, R2009b does not support MATLAB Coder, which was not available until R2011a.

There is no facility to generate C code from MATLAB in R2009b. There was some facility to generate C code from Simulink then, but not from MATLAB.