PETSc version 3.15.5
VecStepBoundInfo
See below 
Synopsis
#include "petscvec.h"  
PetscErrorCode VecStepBoundInfo(Vec X, Vec DX, Vec XL, Vec XU, PetscReal *boundmin, PetscReal *wolfemin, PetscReal *boundmax)
Collective on Vec
Input Parameters
|  | X | - vector with no negative entries | 
|  | XL | - lower bounds | 
|  | XU | - upper bounds | 
|  | DX | - step direction, can have negative, positive or zero entries | 
Output Parameter
|  | boundmin | - (may be NULL this it is not computed) maximum value so that   XL[i] <= X[i] + boundmax*DX[i] <= XU[i] | 
|  | wolfemin | - (may be NULL this it is not computed) | 
|  | boundmax | - (may be NULL this it is not computed) minimum value so that X[i] + boundmax*DX[i] <= XL[i]  or  XU[i] <= X[i] + boundmax*DX[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