MATLAB: How to reset the state of the MATLAB random variable generator from C code

Question

I have created a shared library from a MATLAB function that uses the RAND variable. I want to reset the random number generator from an external C program.

Answer 1

To reset the random number generator from an external C code program, add the following function to your project:

function reset_rand
rand('state', 0)

When creating your shared library, add the above function to the list of MATLAB files to be compiled. Once the library is created, you can make a call to the following function to reset the random number generator:

     mlfReset_rand()

If you are using MATLAB 6.1 or earlier, you can also use the mlfRand function call from MATLAB C Math library as follows to reset the random number generator:

 mlfNRand(0,mxCreateString("state"), mlfScalar(0), NULL);