#include <petscmat.h> PetscErrorCode MatPreallocateInitialize(MPI_Comm comm, PetscInt nrows, PetscInt ncols, PetscInt *dnz, PetscInt *onz)Collective
comm | - the communicator that will share the eventually allocated matrix | |
nrows | - the number of LOCAL rows in the matrix | |
ncols | - the number of LOCAL columns in the matrix |
dnz | - the array that will be passed to the matrix preallocation routines | |
onz | - the other array passed to the matrix preallocation routines |
Do not malloc or free dnz and onz, that is handled internally by these routines
This is a MACRO not a function because it has a leading { that is closed by PetscPreallocateFinalize().