Random Number Generation

Index

randgen/*rng* keyword source

RNG used to generate random numbers

randgen/rand-cdf function source

(rand-cdf cdf)

Pick a random index, weighted by a discrete cumulative distribution function.

randgen/rand-cdf-path macro source

(rand-cdf-path cdf & paths)

Execute one of the paths randomly given a discrete distribution as a CDF

randgen/rand-gaussian function source

(rand-gaussian &opt m sd)

Get a random sample from the standard Gaussian distribution. Optionall specify the mean m and the standard deviation sd.

randgen/rand-index function source

(rand-index xs)

Get a random numeric index of an indexed data structure

randgen/rand-int function source

(rand-int start end)

Get a random integer in a range [start, end) that is approximately uniformly distributed

randgen/rand-path macro source

(rand-path & paths)

Execute one of the paths randomly with uniform distribution

randgen/rand-uniform function source

(rand-uniform)

Get a random number uniformly between 0 and 1

randgen/rand-value function source

(rand-value xs)

Get a random value of an indexed data structure

randgen/rand-weights function source

(rand-weights weights)

Pick a random index given a set of weights

randgen/rand-weights-path macro source

(rand-weights-path weights & paths)

Execute one of the paths randomly given a discrete distribution as a set of weights

randgen/sample-n function source

(sample-n f n)

Generate n samples based on the random sampler `f`.

randgen/set-seed function source

(set-seed seed)

Sets the RNG seed for execution

randgen/weights-to-cdf function source

(weights-to-cdf weights)

Convert an array of weights to a discrete cdf that can be more efficiently used to take a weighted random choice