Function malachite_nz::integer::random::striped_random_nonzero_integers

pub fn striped_random_nonzero_integers(
    seed: Seed,
    mean_stripe_numerator: u64,
    mean_stripe_denominator: u64,
    mean_bits_numerator: u64,
    mean_bits_denominator: u64
) -> StripedRandomIntegers<GeometricRandomNonzeroSigneds<i64>> 

Generates striped random nonzero Integers whose absolute values have a specified mean bit length.

The actual signed bit length is chosen from a distribution that produces values whose mean absolute values are $m$, where $m$ is mean_bits_numerator / mean_bits_denominator (see geometric_random_nonzero_signeds); $m$ must be greater than 1. A striped bit sequence with the given stripe parameter is generated and truncated at the bit length. The highest bit is forced to be 1, an Integer is generated from the sequence, and its sign is set to the sign of the signed bit length. The resulting distribution has no mean or higher-order statistics (unless $m < 2$, which is not typical).

The output length is infinite.

See StripedBitSource for information about generating striped random numbers.

Expected complexity per iteration

$T(n, m) = O(n + m)$

$M(n, m) = O(n / m)$

where $T$ is time, $M$ is additional memory, $n$ is mean_precision_numerator, and $m$ is mean_precision_denominator.

Panics

Panics if mean_stripe_denominator is zero, if mean_stripe_numerator < mean_stripe_denominator, if mean_bits_numerator or mean_bits_denominator are zero, or if mean_bits_numerator <= mean_bits_denominator.

Examples

use malachite_base::iterators::prefix_to_string;
use malachite_base::random::EXAMPLE_SEED;
use malachite_nz::integer::random::striped_random_nonzero_integers;
use malachite_nz::integer::Integer;

assert_eq!(
    prefix_to_string(striped_random_nonzero_integers(EXAMPLE_SEED, 16, 1, 32, 1), 10),
    "[4, 268435456, 84405977732342160290572740160760316144, -133169152, -131064, \
    -2251834173421823, 1577058304, -126100789566374399, -76, 270335, ...]"
)