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Local/With L'Ecuyer-CMRG Seed

Source: R/lecuyer-cmrg-seed.R
local_lecuyer_cmrg_seed.Rd

local_lecuyer_cmrg_seed() seeds the L'Ecuyer-CMRG RNG with a scalar integer via base::set.seed(), restoring the previous state when .local_envir exits. with_lecuyer_cmrg_seed() evaluates code with that seed in effect, then restores the previous state. For a .Random.seed-style state vector (e.g. from get_lecuyer_cmrg_stream_state() or parallel::nextRNGStream()) use local_lecuyer_cmrg_state() / with_lecuyer_cmrg_state().

Usage

local_lecuyer_cmrg_seed(seed, .local_envir = parent.frame())

with_lecuyer_cmrg_seed(seed, code)

Arguments

seed

[integer(1)]
The random seed to use to evaluate the code.

.local_envir

[environment]
The environment to use for scoping.

code

[any]
Code to execute in the temporary environment

Value

with_lecuyer_cmrg_seed() returns the value of code.

See also

withr::local_seed(), local_lecuyer_cmrg_state(), parallel::nextRNGStream().

Examples


local_lecuyer_cmrg_seed(42)
runif(3)
#> [1] 0.1738456 0.5547401 0.4833771

with_lecuyer_cmrg_seed(42, {
  runif(3)
})
#> [1] 0.1738456 0.5547401 0.4833771