PetscRandomSeed#

Seed the random number generator.

Synopsis#

#include "petscsys.h" 
PetscErrorCode PetscRandomSeed(PetscRandom r)

Not collective

Input Parameter#

  • r - The random number generator context

Example Usage#

      PetscRandomSetSeed(r,a positive integer);
      PetscRandomSeed(r);
      PetscRandomGetValue() will now start with the new seed.

      PetscRandomSeed(r) without a call to PetscRandomSetSeed() re-initializes
      the seed. The random numbers generated will be the same as before.

See Also#

PetscRandomCreate(), PetscRandomGetSeed(), PetscRandomSetSeed()

Level#

intermediate

Location#

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

Examples#

src/ksp/ksp/tutorials/ex70.c
src/sys/classes/random/tutorials/ex1.c
src/snes/tutorials/ex12.c

Implementations#

PetscRandomSeed_CURAND() in src/sys/classes/random/impls/curand/curand.c
PetscRandomSeed_Rand() in src/sys/classes/random/impls/rand/rand.c
PetscRandomSeed_Rand48() in src/sys/classes/random/impls/rand48/rand48.c
PetscRandomSeed_Rander48() in src/sys/classes/random/impls/rander48/rander48.c
PetscRandomSeed_Random123() in src/sys/classes/random/impls/random123/random123.c
PetscRandomSeed_Sprng() in src/sys/classes/random/impls/sprng/sprng.c


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