petsc-3.14.6 2021-03-30
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MatAXPY

 Computes Y = a*X + Y.

Synopsis

#include "petscmat.h"  
PetscErrorCode MatAXPY(Mat Y,PetscScalar a,Mat X,MatStructure str)
Logically Collective on Mat

Input Parameters

a - the scalar multiplier
X - the first matrix
Y - the second matrix
str - either SAME_NONZERO_PATTERN, DIFFERENT_NONZERO_PATTERN or SUBSET_NONZERO_PATTERN (nonzeros of X is a subset of Y's)

Notes: No operation is performed when a is zero.

See Also

MatAYPX()

Level

intermediate

Location

src/mat/utils/axpy.c

Examples

src/ksp/ksp/tutorials/ex21.c.html
src/ksp/ksp/tutorials/ex29.c.html
src/ksp/ksp/tutorials/ex34.c.html
src/ts/tutorials/ex50.c.html
src/tao/unconstrained/tutorials/spectraladjointassimilation.c.html
src/tao/pde_constrained/tutorials/hyperbolic.c.html
src/tao/tutorials/ex4.c.html

Implementations

MatAXPY_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatAXPY_SeqAIJ in src/mat/impls/aij/seq/aij.c
MatAXPY_MPIBAIJ in src/mat/impls/baij/mpi/mpibaij.c
MatAXPY_SeqBAIJ in src/mat/impls/baij/seq/baij.c
MatAXPY_SeqBAIJMKL in src/mat/impls/baij/seq/baijmkl/baijmkl.c
MatAXPY_ConstantDiagonal in src/mat/impls/cdiagonal/cdiagonal.c
MatAXPY_MPIDense in src/mat/impls/dense/mpi/mpidense.c
MatAXPY_SeqDenseCUDA in src/mat/impls/dense/seq/cuda/densecuda.cu
MatAXPY_SeqDense in src/mat/impls/dense/seq/dense.c
MatAXPY_Elemental in src/mat/impls/elemental/matelem.cxx
MatAXPY_HYPRE in src/mat/impls/hypre/mhypre.c
MatAXPY_IS in src/mat/impls/is/matis.c
MatAXPY_Nest in src/mat/impls/nest/matnest.c
MatAXPY_MPISBAIJ in src/mat/impls/sbaij/mpi/mpisbaij.c
MatAXPY_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij.c
MatAXPY_ScaLAPACK in src/mat/impls/scalapack/matscalapack.c
MatAXPY_Shell in src/mat/impls/shell/shell.c
MatAXPY_HT in src/mat/impls/transpose/htransm.c
MatAXPY_Transpose in src/mat/impls/transpose/transm.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages