petsc-3.4.2 2013-07-02

# MatSeqAIJSetPreallocationCSR

Allocates memory for a sparse sequential matrix in AIJ format.

### Synopsis

    #include "petscmat.h"
    PetscErrorCode MatSeqAIJSetPreallocationCSR(Mat B,const PetscInt i[],const PetscInt j[],const PetscScalar v[])

### Input Parameters

| B | - the matrix
| i | - the indices into j for the start of each row (starts with zero)
| j | - the column indices for each row (starts with zero) these must be sorted for each row
| v | - optional values in the matrix

The i,j,v values are COPIED with this routine; to avoid the copy use MatCreateSeqAIJWithArrays()

### Keywords

matrix, aij, compressed row, sparse, sequential

### See Also

MatCreate(), MatCreateSeqAIJ(), MatSetValues(), MatSeqAIJSetPreallocation(), MatCreateSeqAIJ(), SeqAIJ

Level:developer
Location: src/mat/impls/aij/seq/aij.c
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