VecMax#

Determines the vector component with maximum real part and its location.

Synopsis#

#include "petscvec.h"   
PetscErrorCode VecMax(Vec x, PetscInt *p, PetscReal *val)

Collective

Input Parameter#

  • x - the vector

Output Parameters#

  • p - the location of val (pass NULL if you don’t want this)

  • val - the maximum component

Notes#

Returns the value PETSC_MIN_REAL and negative p if the vector is of length 0.

Returns the smallest index with the maximum value

See Also#

Vectors and Parallel Data, Vec, VecNorm(), VecMin()

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Examples#

src/vec/vec/tutorials/ex1.c.html
src/dm/tutorials/ex15.c.html
src/ksp/ksp/tutorials/ex72.c.html
src/ts/tutorials/ex17.c.html
src/ts/tutorials/ex9.c.html

Implementations#

VecMax_MPIKokkos in src/vec/vec/impls/mpi/kokkos/mpikok.kokkos.cxx
VecMax_MPICUDA in src/vec/vec/impls/mpi/mpicuda/mpicuda.cu
VecMax_MPIHIP in src/vec/vec/impls/mpi/mpihip/mpihip.hip.c
VecMax_MPI in src/vec/vec/impls/mpi/pvec2.c
VecMax_Nest in src/vec/vec/impls/nest/vecnest.c
VecMax_Seq in src/vec/vec/impls/seq/dvec2.c
VecMax_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecMax_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecMax_SeqHIP in src/vec/vec/impls/seq/seqhip/vechip2.hip.c


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Index of all Vec routines
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