petsc-3.13.6 2020-09-29
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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 on
Vec
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
Notes
For complex numbers only compares the real part
Level
advanced
Location
src/vec/vec/utils/projection.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages