MatPreallocateLocation#
An alternative to MatPreallocateSet() that puts the nonzero locations into the matrix if it exists
Synopsis#
Not Collective
Input Parameters#
A - matrix
row - row where values exist (must be local to this process)
ncols - number of columns
cols - columns with nonzeros
dnz - the array that will be passed to the matrix preallocation routines
onz - the other array passed to the matrix preallocation routines
Notes#
See Users-Manual: ch_performance for more details.
Do not malloc or free dnz and onz that is handled internally by these routines
This is a MACRO not a function because it uses a bunch of variables private to the MatPreallocation…. routines.
See Also#
MatPreallocateBegin()
, MatPreallocateSet()
, MatPreallocateSymmetricSetBlock()
, MatPreallocateSetLocal()
,
MatPreallocateSymmetricSetLocalBlock()
Level#
intermediate
Location#
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages