VecStepMax

Returns the largest value so that x[i] + step*DX[i] >= 0 for all i

Synopsis

#include "petscvec.h"  
PetscErrorCode VecStepMax(Vec X, Vec DX, PetscReal *step)

Collective

Input Parameters

• X - vector with no negative entries

• DX - a step direction, can have negative, positive or zero entries

Output Parameter

• step - largest value such that x[i] + step*DX[i] >= 0 for all i

Note

For complex numbers only compares the real part

See Also

Vec

Level

advanced

Location

src/vec/vec/utils/projection.c

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Index of all Vec routines
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Index of all manual pages