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mwPointer (Fortran)

Fortran pointer type


The mwPointer preprocessor macro declares the appropriate Fortran type representing a pointer to an mxArray, the fundamental type underlying MATLAB® data. The Fortran header file containing this macro is:

#include "fintrf.h"

The Fortran preprocessor translates mwPointer to the Fortran declaration that is appropriate for the platform on which you compile your file. On 64-bit platforms, the Fortran type that represents a pointer is INTEGER*8. On 32-bit platforms, the type is INTEGER*4. If your Fortran compiler supports preprocessing, you can use mwPointer to declare functions, arguments, and variables that represent pointers. If you cannot use mwPointer, then ensure that your declarations have the correct size for the platform on which you are compiling Fortran code.


This example declares the arguments for mexFunction in a Fortran MEX file.

subroutine mexFunction(nlhs, plhs, nrhs, prhs)
mwPointer plhs(*), prhs(*)
integer nlhs, nrhs

For additional examples, see the Fortran files with names ending in .F in the matlabroot/extern/examples folder.

Version History

Introduced in R2006a