title: How to pass values to mex files
body: <p>Hi I want to send a value from my matlab to my mex function. The value is generally about 10 digits long and i have used unsigned long long data type. </p>
  
  <p>But i have difficulty accessing it from the mexfile. 
  mxGetPr returns double type, so is there some type conversion i have to do?</p>