BandedMatrixPreallocate.c File Reference

Preallocate memory for a banded matrix object. More...

#include <stdlib.h>
#include <bandedmatrix.h>

Go to the source code of this file.

Functions
int	BandedMatrixPreallocate (void *A, int nbands, int nrows_local, int BlockSize)

Detailed Description

Preallocate memory for a banded matrix object.

Author

Debojyoti Ghosh

Definition in file BandedMatrixPreallocate.c.

Function Documentation

BandedMatrixPreallocate()

int BandedMatrixPreallocate	(	void *	A,
		int	nbands,
		int	nrows_local,
		int	BlockSize
	)

Preallocate memory for a banded matrix object.

Parameters

A	Banded matrix object of the type BandedMatrix
nbands	Number of bands
nrows_local	Local number of rows
BlockSize	Block size

Definition at line 10 of file BandedMatrixPreallocate.c.

{
  BandedMatrix *B = (BandedMatrix*) A;

  B->nbands       = nbands;
  B->nrows_local  = nrows_local;
  B->BlockSize    = BlockSize;

  B->ncol = (int*) calloc (nrows_local*nbands, sizeof(int));
  B->nrow = (int*) calloc (nrows_local, sizeof(int));
  B->data = (double*) calloc (nrows_local*nbands*BlockSize*BlockSize, sizeof(double));

  return(0);
}