2: #include <../src/vec/pf/pfimpl.h>
  3: #include <petscmatlab.h>

  5: /*
  6:         This PF generates a MATLAB function on the fly
  7: */
  8: typedef struct {
  9:   PetscInt          dimin,dimout;
 10:   PetscMatlabEngine mengine;
 11:   char              *string;
 12: } PF_Matlab;

 14: PetscErrorCode PFView_Matlab(void *value,PetscViewer viewer)
 15: {
 16:   PetscBool      iascii;
 17:   PF_Matlab      *matlab = (PF_Matlab*)value;

 19:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
 20:   if (iascii) PetscViewerASCIIPrintf(viewer,"Matlab Matlab = %s\n",matlab->string);
 21:   return 0;
 22: }

 24: PetscErrorCode PFDestroy_Matlab(void *value)
 25: {
 26:   PF_Matlab      *matlab = (PF_Matlab*)value;

 28:   PetscFree(matlab->string);
 29:   PetscMatlabEngineDestroy(&matlab->mengine);
 30:   PetscFree(matlab);
 31:   return 0;
 32: }

 34: PetscErrorCode PFApply_Matlab(void *value,PetscInt n,const PetscScalar *in,PetscScalar *out)
 35: {
 36:   PF_Matlab *matlab = (PF_Matlab*)value;

 39:   PetscMatlabEnginePutArray(matlab->mengine,matlab->dimin,n,in,"x");
 40:   PetscMatlabEngineEvaluate(matlab->mengine,matlab->string);
 41:   PetscMatlabEngineGetArray(matlab->mengine,matlab->dimout,n,out,"f");
 42:   return 0;
 43: }

 45: PetscErrorCode PFSetFromOptions_Matlab(PetscOptionItems *PetscOptionsObject,PF pf)
 46: {
 47:   PetscBool  flag;
 48:   char       value[256];
 49:   PF_Matlab *matlab = (PF_Matlab*)pf->data;

 51:   PetscOptionsHead(PetscOptionsObject,"Matlab function options");
 52:   PetscOptionsString("-pf_matlab","Matlab function","None","",value,sizeof(value),&flag);
 53:   if (flag) PetscStrallocpy((char*)value,&matlab->string);
 54:   PetscOptionsTail();
 55:   return 0;
 56: }

 58: PETSC_EXTERN PetscErrorCode PFCreate_Matlab(PF pf,void *value)
 59: {
 60:   PF_Matlab *matlab;

 62:   PetscNewLog(pf,&matlab);
 63:   matlab->dimin  = pf->dimin;
 64:   matlab->dimout = pf->dimout;

 66:   PetscMatlabEngineCreate(PetscObjectComm((PetscObject)pf),NULL,&matlab->mengine);

 68:   if (value) PetscStrallocpy((char*)value,&matlab->string);
 69:   PFSet(pf,PFApply_Matlab,NULL,PFView_Matlab,PFDestroy_Matlab,matlab);

 71:   pf->ops->setfromoptions = PFSetFromOptions_Matlab;
 72:   return 0;
 73: }