2: #include <../src/vec/pf/pfimpl.h>            /*I "petscpf.h" I*/
  3: #include <petscmatlab.h>   /*I  "petscmatlab.h"  I*/

  5: /*
  6:         Ths 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;

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

 23:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
 24:   if (iascii) {
 25:     PetscViewerASCIIPrintf(viewer,"Matlab Matlab = %s\n",matlab->string);
 26:   }
 27:   return(0);
 28: }

 32: PetscErrorCode PFDestroy_Matlab(void *value)
 33: {
 35:   PF_Matlab      *matlab = (PF_Matlab*)value;

 38:   PetscFree(matlab->string);
 39:   PetscMatlabEngineDestroy(&matlab->mengine);
 40:   PetscFree(matlab);
 41:   return(0);
 42: }

 46: PetscErrorCode PFApply_Matlab(void *value,PetscInt n,const PetscScalar *in,PetscScalar *out)
 47: {
 48:   PF_Matlab      *matlab = (PF_Matlab*)value;

 52:   if (!value) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"Need to set string for MATLAB function, via -pf_matlab string");
 53:   PetscMatlabEnginePutArray(matlab->mengine,matlab->dimin,n,in,"x");
 54:   PetscMatlabEngineEvaluate(matlab->mengine,matlab->string);
 55:   PetscMatlabEngineGetArray(matlab->mengine,matlab->dimout,n,out,"f");
 56:   return(0);
 57: }

 61: PetscErrorCode PFSetFromOptions_Matlab(PetscOptions *PetscOptionsObject,PF pf)
 62: {
 64:   PetscBool      flag;
 65:   char           value[256];
 66:   PF_Matlab      *matlab = (PF_Matlab*)pf->data;

 69:   PetscOptionsHead(PetscOptionsObject,"Matlab function options");
 70:   PetscOptionsString("-pf_matlab","Matlab function","None","",value,256,&flag);
 71:   if (flag) {
 72:     PetscStrallocpy((char*)value,&matlab->string);
 73:   }
 74:   PetscOptionsTail();
 75:   return(0);
 76: }

 80: PETSC_EXTERN PetscErrorCode PFCreate_Matlab(PF pf,void *value)
 81: {
 83:   PF_Matlab      *matlab;

 86:   PetscNewLog(pf,&matlab);
 87:   matlab->dimin  = pf->dimin;
 88:   matlab->dimout = pf->dimout;

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

 92:   if (value) {
 93:     PetscStrallocpy((char*)value,&matlab->string);
 94:   }
 95:   PFSet(pf,PFApply_Matlab,NULL,PFView_Matlab,PFDestroy_Matlab,matlab);

 97:   pf->ops->setfromoptions = PFSetFromOptions_Matlab;
 98:   return(0);
 99: }