petsc-3.7.7 2017-09-25
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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