# VecSetRandom

Sets all components of a vector to random numbers.

### Synopsis

    #include "petscvec.h"
    PetscErrorCode  VecSetRandom(Vec x,PetscRandom rctx)

Collective on Vec

### Input Parameters

| x | - the vector
| rctx | - the random number context, formed by PetscRandomCreate(), or PETSC_NULL and it will create one internally.

### Output Parameter

x -the vector

### Example of Usage

         PetscRandomCreate(PETSC_COMM_WORLD,&rctx);
         VecSetRandom(x,rctx);
         PetscRandomDestroy(rctx);

### See Also

VecSet(), VecSetValues(), PetscRandomCreate(), PetscRandomDestroy()

Level:intermediate
Location:src/vec/vec/interface/vector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/ksp/ksp/examples/tutorials/ex2.c.html
src/ksp/ksp/examples/tutorials/ex4.c.html
src/ksp/ksp/examples/tutorials/ex11.c.html
src/ksp/ksp/examples/tutorials/ex2f.F.html
src/ksp/ksp/examples/tutorials/ex11f.F.html