1: /*$Id: vseqcr.c,v 1.18 2001/03/23 23:21:25 balay Exp $*/
  2: /*
  3:    Implements the sequential vectors.
  4: */

 6:  #include src/vec/vecimpl.h
 7:  #include src/vec/impls/dvecimpl.h

  9: #undef __FUNCT__  
 11: /*@C
 12:    VecCreateSeq - Creates a standard, sequential array-style vector.

 14:    Collective on MPI_Comm

 16:    Input Parameter:
 17: +  comm - the communicator, should be PETSC_COMM_SELF
 18: -  n - the vector length 

 20:    Output Parameter:
 21: .  V - the vector

 23:    Notes:
 24:    Use VecDuplicate() or VecDuplicateVecs() to form additional vectors of the
 25:    same type as an existing vector.

 27:    Level: intermediate

 29:    Concepts: vectors^creating sequential

 31: .seealso: VecCreateMPI(), VecCreate(), VecDuplicate(), VecDuplicateVecs(), VecCreateGhost()
 32: @*/
 33: int VecCreateSeq(MPI_Comm comm,int n,Vec *v)
 34: {
 35:   int ierr,size;

 38:   MPI_Comm_size(comm,&size);
 39:   if (size > 1) SETERRQ(1,"Comm_size > 1; sequential vector can be created on 1 processor only");
 40:   VecCreate(comm,v);
 41:   VecSetSizes(*v,n,n);
 42:   VecSetType(*v,VECSEQ);
 43:   return(0);
 44: }