Experimental Physics and
Industrial Control System

"J. Lewis Muir" <[email protected]> · Mon, 26 Sep 2011 17:02:42 -0500

On 9/26/11 4:39 PM, Bradley Pietrzak wrote:
> Thank you again for your responses.  Unfortunately, I have encountered
> another problem, this time involving code that has been escaped to C.  The
> new version of my program is shown below.  Without the re-entrant option,
> the code runs perfectly fine.  With the re-entrant option, however, I am met
> with several errors. The SNL user's manual says that the SNC automatically
> refers to variables in the struct UserVar by running the code " pVar->xxx",
> but that such references have to be handled manually for escaped C code. How
> do I handle such situations manually?

Hi, Brad.

In your example, you would need to do:

  %% helloWorld(pVar->i);

Or, if you are wanting to do more things within your helloWorld
function, you could call it like this:

  %% helloWorld(ssId, pVar);

with the function changed to:

  void helloWorld(SS_ID ssId, struct UserVar *pVar) {
    printf("Hello World! You have just called a C function, "
      "and the variable i is %5.1f \n", pVar->i);
  }

Lewis

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System