Date: 2016-07-24T16:49:42+00:00

Actual source code: bvec3.c
petsc-3.7.3 2016-07-24
Report Typos and Errors

      2: /*
      3:    Implements the sequential vectors.
      4: */

      6: #include <../src/vec/vec/impls/dvecimpl.h>          /*I "petscvec.h" I*/
      7: /*MC
      8:    VECSEQ - VECSEQ = "seq" - The basic sequential vector

     10:    Options Database Keys:
     11: . -vec_type seq - sets the vector type to VECSEQ during a call to VecSetFromOptions()

     13:   Level: beginner

     15: .seealso: VecCreate(), VecSetType(), VecSetFromOptions(), VecCreateSeqWithArray(), VECMPI, VecType, VecCreateMPI(), VecCreateSeq()
     16: M*/

     18: #if defined(PETSC_USE_MIXED_PRECISION)
     19: extern PetscErrorCode VecCreate_Seq_Private(Vec,const float*);
     20: extern PetscErrorCode VecCreate_Seq_Private(Vec,const double*);
     21: #endif

     25: PETSC_EXTERN PetscErrorCode VecCreate_Seq(Vec V)
     26: {
     27:   Vec_Seq        *s;
     28:   PetscScalar    *array;
     30:   PetscInt       n = PetscMax(V->map->n,V->map->N);
     31:   PetscMPIInt    size;

     34:   MPI_Comm_size(PetscObjectComm((PetscObject)V),&size);
     35:   if (size > 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot create VECSEQ on more than one process");
     36: #if !defined(PETSC_USE_MIXED_PRECISION)
     37:   PetscMalloc1(n,&array);
     38:   PetscLogObjectMemory((PetscObject)V, n*sizeof(PetscScalar));
     39:   VecCreate_Seq_Private(V,array);

     41:   s                  = (Vec_Seq*)V->data;
     42:   s->array_allocated = array;

     44:   VecSet(V,0.0);
     45: #else
     46:   switch (((PetscObject)V)->precision) {
     47:   case PETSC_PRECISION_SINGLE: {
     48:     float *aarray;

     50:     PetscMalloc1(n,&aarray);
     51:     PetscLogObjectMemory((PetscObject)V, n*sizeof(float));
     52:     PetscMemzero(aarray,n*sizeof(float));
     53:     VecCreate_Seq_Private(V,aarray);

     55:     s                  = (Vec_Seq*)V->data;
     56:     s->array_allocated = (PetscScalar*)aarray;
     57:   } break;
     58:   case PETSC_PRECISION_DOUBLE: {
     59:     double *aarray;

     61:     PetscMalloc1(n,&aarray);
     62:     PetscLogObjectMemory((PetscObject)V, n*sizeof(double));
     63:     PetscMemzero(aarray,n*sizeof(double));
     64:     VecCreate_Seq_Private(V,aarray);

     66:     s                  = (Vec_Seq*)V->data;
     67:     s->array_allocated = (PetscScalar*)aarray;
     68:   } break;
     69:   default: SETERRQ1(PetscObjectComm((PetscObject)V),PETSC_ERR_SUP,"No support for mixed precision %d",(int)(((PetscObject)V)->precision));
     70:   }
     71: #endif
     72:   return(0);
     73: }