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   <div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="MatSeqBAIJSetPreallocationCSR"><H1>MatSeqBAIJSetPreallocationCSR</H1></A>
Allocates memory for a sparse sequential matrix in AIJ format (the default sequential PETSc format). 
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"  
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A>  <A HREF="../Mat/MatSeqBAIJSetPreallocationCSR.html#MatSeqBAIJSetPreallocationCSR">MatSeqBAIJSetPreallocationCSR</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> B,<A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> bs,const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> i[],const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> j[], const <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> v[])
</PRE>
Collective on <A HREF="../Sys/MPI_Comm.html#MPI_Comm">MPI_Comm</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>B </B></TD><TD>- the matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>i </B></TD><TD>- the indices into j for the start of each local row (starts with zero)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>j </B></TD><TD>- the column indices for each local row (starts with zero) these must be sorted for each row
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>v </B></TD><TD>- optional values in the matrix
</TD></TR></TABLE>
<P>

<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
The order of the entries in values is specified by the <A HREF="../Mat/MatOption.html#MatOption">MatOption</A> <A HREF="../Mat/MatOption.html#MatOption">MAT_ROW_ORIENTED</A>.  For example, C programs
may want to use the default <A HREF="../Mat/MatOption.html#MatOption">MAT_ROW_ORIENTED</A>=<A HREF="../Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> and use an array v[nnz][bs][bs] where the second index is
over rows within a block and the last index is over columns within a block row.  Fortran programs will likely set
<A HREF="../Mat/MatOption.html#MatOption">MAT_ROW_ORIENTED</A>=<A HREF="../Sys/PETSC_FALSE.html#PETSC_FALSE">PETSC_FALSE</A> and use a Fortran array v(bs,bs,nnz) in which the first index is over rows within a
block column and the second index is over columns within a block.
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
 matrix, aij, compressed row, sparse
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
 <A HREF="../Mat/MatCreate.html#MatCreate">MatCreate</A>(), <A HREF="../Mat/MatCreateSeqBAIJ.html#MatCreateSeqBAIJ">MatCreateSeqBAIJ</A>(), <A HREF="../Mat/MatSetValues.html#MatSetValues">MatSetValues</A>(), <A HREF="../Mat/MatSeqBAIJSetPreallocation.html#MatSeqBAIJSetPreallocation">MatSeqBAIJSetPreallocation</A>(), <A HREF="../Mat/MATSEQBAIJ.html#MATSEQBAIJ">MATSEQBAIJ</A>
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>developer<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/impls/baij/seq/baij.c.html#MatSeqBAIJSetPreallocationCSR">src/mat/impls/baij/seq/baij.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/mat/impls/baij/seq/baij.c.html#MatSeqBAIJSetPreallocationCSR_SeqBAIJ">MatSeqBAIJSetPreallocationCSR_SeqBAIJ in src/mat/impls/baij/seq/baij.c</A><BR>
<BR><A HREF="./index.html">Index of all Mat routines</A>
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