Actual source code: ex1.c

  1: /*$Id: ex1.c,v 1.41 2001/04/10 19:34:49 bsmith Exp $*/
  2: /*
  3:        Formatted test for ISGeneral routines.
  4: */

  6: static char help[] = "Tests IS general routines.nn";

 8:  #include petscis.h

 10: int main(int argc,char **argv)
 11: {
 12:   int        i,n,ierr,*indices,rank,size,*ii;
 13:   IS         is,newis;
 14:   PetscTruth flg;

 16:   PetscInitialize(&argc,&argv,(char*)0,help);
 17:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
 18:   MPI_Comm_size(PETSC_COMM_WORLD,&size);

 20:   /*
 21:      Test IS of size 0 
 22:   */
 23:   ISCreateGeneral(PETSC_COMM_SELF,0,&n,&is);
 24:   ISGetSize(is,&n);
 25:   if (n != 0) SETERRQ(1,"ISGetSize");
 26:   ISDestroy(is);

 28:   /*
 29:      Create large IS and test ISGetIndices()
 30:   */
 31:   n = 10000 + rank;
 32:   PetscMalloc(n*sizeof(int),&indices);
 33:   for (i=0; i<n; i++) {
 34:     indices[i] = rank + i;
 35:   }
 36:   ISCreateGeneral(PETSC_COMM_SELF,n,indices,&is);
 37:   ISGetIndices(is,&ii);
 38:   for (i=0; i<n; i++) {
 39:     if (ii[i] != indices[i]) SETERRQ(1,"ISGetIndices");
 40:   }
 41:   ISRestoreIndices(is,&ii);

 43:   /* 
 44:      Check identity and permutation 
 45:   */
 46:   ISPermutation(is,&flg);
 47:   if (flg == PETSC_TRUE) SETERRQ(1,"ISPermutation");
 48:   ISIdentity(is,&flg);
 49:   if (flg != PETSC_TRUE) SETERRQ(1,"ISIdentity");
 50:   ISSetPermutation(is);
 51:   ISSetIdentity(is);
 52:   ISPermutation(is,&flg);
 53:   if (flg != PETSC_TRUE) SETERRQ(1,"ISPermutation");
 54:   ISIdentity(is,&flg);
 55:   if (flg != PETSC_TRUE) SETERRQ(1,"ISIdentity");

 57:   /*
 58:      Check equality of index sets 
 59:   */
 60:   ISEqual(is,is,&flg);
 61:   if (flg != PETSC_TRUE) SETERRQ(1,"ISEqual");

 63:   /*
 64:      Sorting 
 65:   */
 66:   ISSort(is);
 67:   ISSorted(is,&flg);
 68:   if (flg != PETSC_TRUE) SETERRQ(1,"ISSort");

 70:   /*
 71:      Thinks it is a different type?
 72:   */
 73:   ISStride(is,&flg);
 74:   if (flg == PETSC_TRUE) SETERRQ(1,"ISStride");
 75:   ISBlock(is,&flg);
 76:   if (flg == PETSC_TRUE) SETERRQ(1,"ISBlock");

 78:   ISDestroy(is);

 80:   /*
 81:      Inverting permutation
 82:   */
 83:   for (i=0; i<n; i++) {
 84:     indices[i] = n - i - 1;
 85:   }
 86:   ISCreateGeneral(PETSC_COMM_SELF,n,indices,&is);
 87:   PetscFree(indices);
 88:   ISSetPermutation(is);
 89:   ISInvertPermutation(is,PETSC_DECIDE,&newis);
 90:   ISGetIndices(newis,&ii);
 91:   for (i=0; i<n; i++) {
 92:     if (ii[i] != n - i - 1) SETERRQ(1,"ISInvertPermutation");
 93:   }
 94:   ISRestoreIndices(newis,&ii);
 95:   ISDestroy(newis);
 96:   ISDestroy(is);
 97:   PetscFinalize();
 98:   return 0;
 99: }
100: