PetscRandomSetFromOptions#

Configures the random number generator from the options database.

Synopsis#

#include "petscsys.h" 
PetscErrorCode PetscRandomSetFromOptions(PetscRandom rnd)

Collective

Input Parameter#

rnd - The random number generator context

Options Database Keys#

-random_seed - provide a seed to the random number generator
-random_no_imaginary_part - makes the imaginary part of the random number zero, this is useful when you want the same code to produce the same result when run with real numbers or complex numbers for regression testing purposes

Note#

Must be called after PetscRandomCreate() but before the rnd is used.

See Also#

PetscRandom, PetscRandomCreate(), PetscRandomSetType()

Level#

beginner

Location#

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

Examples#

src/dm/field/tutorials/ex1.c
src/ksp/ksp/tutorials/ex11.c
src/ksp/ksp/tutorials/ex11f.F90
src/ksp/ksp/tutorials/ex18.c
src/ksp/ksp/tutorials/ex21.c
src/ksp/ksp/tutorials/ex2f.F90
src/ksp/ksp/tutorials/ex46.c
src/ksp/ksp/tutorials/ex5.c
src/ksp/ksp/tutorials/ex52.c
src/ksp/ksp/tutorials/ex57f.F90
src/ksp/ksp/tutorials/ex5f.F90

Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages