petsc-3.7.3 2016-07-24
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# PetscRandomGetValueReal

Generates a purely real random number. Call this after first calling PetscRandomCreate().

### Synopsis

    #include "petscsys.h"
    PetscErrorCode  PetscRandomGetValueReal(PetscRandom r,PetscReal *val)

Not Collective

### Intput Parameter

r -the random number generator context

### Output Parameter

val -the value

### Notes

Use VecSetRandom() to set the elements of a vector to random numbers.

### Example of Usage

          PetscRandomCreate(PETSC_COMM_WORLD,&r);
          PetscRandomGetValueReal(r,&value1);
          PetscRandomGetValueReal(r,&value2);
          PetscRandomGetValueReal(r,&value3);
          PetscRandomDestroy(&r);

### See Also

PetscRandomCreate(), PetscRandomDestroy(), VecSetRandom(), PetscRandomGetValue()

Level:intermediate
Location: src/sys/classes/random/interface/random.c
Index of all Sys routines
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Index of all manual pages