PetscRandomGetValues#

Generates a sequence of random numbers. Call this after first calling PetscRandomCreate().

Synopsis#

#include "petscsys.h" 
PetscErrorCode PetscRandomGetValues(PetscRandom r, PetscInt n, PetscScalar *val)

Not Collective

Input Parameters#

  • r - the random number generator context

  • n - number of random numbers to generate

Output Parameter#

  • val - the array to hold the values

Notes#

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

When PETSc is compiled for complex numbers this returns an array of complex numbers with random real and complex parts. Use PetscRandomGetValuesReal() to get an array of random real numbers.

See Also#

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

Level#

intermediate

Location#

src/sys/classes/random/interface/random.c

Implementations#

PetscRandomGetValues_CURAND() in src/sys/classes/random/impls/curand/curand.c
PetscRandomGetValues_Random123() in src/sys/classes/random/impls/random123/random123.c

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