petsc-3.7.7 2017-09-25

VecMin

Determines the minimum vector component and its location.

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

Collective on Vec

x -the vector

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

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

This returns the smallest index with the minumum value