Parameters

In Part Using the Mosel language the concept of parameters in Mosel has been introduced: when a Mosel model is executed from the command line, it is possible to pass new values for its parameters into the model. The same is possible with a model run in C. If, for instance, we want to run model `Prime' from Section Working with sets to obtain all prime numbers up to 500 (instead of the default value 100 set for the parameter LIMIT in the model), we may start a program with the following lines:

 XPRMmodel mod;
 int result;

 if(XPRMinit())                                 /* Initialize Mosel */
  return 1;

 if((mod=XPRMloadmod("prime.bim",NULL))==NULL)  /* Load a BIM file */
  return 2;

 if(XPRMrunmod(mod,&result,"LIMIT=500"))        /* Run the model */
  return 3;
 

To use function XPRMexecmod instead of the compile/load/run sequence we have:

 int result;

 if(XPRMinit())                       /* Initialize Mosel */
  return 1;
                                      /* Execute with new parameter settings */
 if(XPRMexecmod(NULL,"prime.mos","LIMIT=500",&result,NULL))
  return 2;