backend_random — Logtalk 3.100.1

object

# `backend_random`

Random number generator predicates using the backend Prolog compiler built-in random generator.

Availability:
`logtalk_load(random(loader))`
Author: Paulo Moura
Version: 1:22:0
Date: 2026-02-11
Compilation flags:
`static, context_switching_calls`
Implements:
`public` pseudo_random_protocol
`public` sampling_protocol
Uses:
list
Remarks:

> - Implementation: The backend Prolog compiler built-in random generator is only used for the basic `random/1`, `get_seed/1`, and `set_seed/1` predicates.

> - Portability: B-Prolog, CxProlog, ECLiPSe, JIProlog, Qu-Prolog, and Quintus Prolog do not provide implementations for the `get_seed/1` and `set_seed/1` predicates and calling these predicates simply succeed without performing any action.

Inherited public predicates:
bernoulli/2 beta/3 between/3 binomial/3 chi_squared/2 circular_uniform_cartesian/3 circular_uniform_polar/3 dirichlet/2 enumerate/2 exponential/2 fisher/3 gamma/3 geometric/2 get_seed/1 gumbel/3 hypergeometric/4 logistic/3 lognormal/3 logseries/2 maybe/0 maybe/1 maybe/2 maybe_call/1 maybe_call/2 member/2 normal/3 permutation/2 poisson/2 power/2 random/1 random/3 randseq/4 randset/4 select/3 select/4 sequence/4 set/4 set_seed/1 standard_cauchy/3 standard_exponential/1 standard_gamma/2 standard_normal/1 standard_t/2 swap/2 swap_consecutive/2 triangular/4 uniform/1 uniform/3 von_mises/3 wald/3 weibull/3

## Public predicates

(no local declarations; see entity ancestors if any)

## Protected predicates

(no local declarations; see entity ancestors if any)

## Private predicates

(no local declarations; see entity ancestors if any)

## Operators

(none)

See also

random, fast_random