petsc-3.9.0 2018-04-07
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VecMax

Determines the maximum vector component and its location.

Synopsis

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

Input Parameter

x -the vector

Output Parameters

val - the maximum component
p - the location of val (pass NULL if you don't want this)

Notes

Returns the value PETSC_MIN_REAL and p = -1 if the vector is of length 0.

Returns the smallest index with the maximum value

See Also

VecNorm(), VecMin()

Level

intermediate

Location

src/vec/vec/interface/rvector.c

Examples

src/vec/vec/examples/tutorials/ex1.c.html
src/dm/examples/tutorials/ex15.c.html
src/ksp/ksp/examples/tutorials/ex10.c.html
src/ts/examples/tutorials/ex9.c.html
src/ts/examples/tutorials/ex17.c.html

Implementations

VecMax_MPI in src/vec/vec/impls/mpi/pvec2.c
VecMax_Nest_Recursive in src/vec/vec/impls/nest/vecnest.c
VecMax_Nest in src/vec/vec/impls/nest/vecnest.c
VecMax_Node in src/vec/vec/impls/node/vecnode.c
VecMax_Seq in src/vec/vec/impls/seq/dvec2.c

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