PetscRandomSetFromOptions#

Configures the random number generator from the options database.

Synopsis#

Collective on rnd

Input Parameter#

  • rnd - The random number generator context

Options Database Keys#

  • -random_seed - provide a seed to the random number generater

  • -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/sys/classes/random/tutorials/ex1.c.html
src/sys/classes/random/tutorials/ex2.c.html
src/vec/vec/utils/tagger/tutorials/ex1.c.html
src/vec/vec/tutorials/ex19.c.html
src/vec/vec/tutorials/performance.c.html
src/dm/field/tutorials/ex1.c.html
src/ksp/pc/tutorials/ex3.c.html
src/ksp/ksp/tutorials/ex11.c.html
src/ksp/ksp/tutorials/ex11f.F90.html
src/ksp/ksp/tutorials/ex18.c.html
src/ksp/ksp/tutorials/ex21.c.html


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