90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
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{{alias}}( α, β[, options] )
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Returns an iterator for generating pseudorandom numbers drawn from a gamma
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distribution.
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If an environment supports Symbol.iterator, the returned iterator is
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iterable.
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The function throws an error if `α <= 0` or `β <= 0`.
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Parameters
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----------
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α: number
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Shape parameter.
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β: number
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Rate parameter.
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options: Object (optional)
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Options.
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options.prng: Function (optional)
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Pseudorandom number generator (PRNG) for generating uniformly
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distributed pseudorandom numbers on the interval `[0,1)`. If provided,
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the `state` and `seed` options are ignored. In order to seed the
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returned iterator, one must seed the provided `prng` (assuming the
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provided `prng` is seedable).
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options.seed: integer|ArrayLikeObject<integer> (optional)
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Pseudorandom number generator seed. The seed may be either a positive
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unsigned 32-bit integer or, for arbitrary length seeds, an array-like
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object containing unsigned 32-bit integers.
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options.state: Uint32Array (optional)
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Pseudorandom number generator state. If provided, the `seed` option is
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ignored.
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options.copy: boolean (optional)
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Boolean indicating whether to copy a provided pseudorandom number
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generator state. Setting this option to `false` allows sharing state
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between two or more pseudorandom number generators. Setting this option
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to `true` ensures that a returned iterator has exclusive control over
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its internal state. Default: true.
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options.iter: integer (optional)
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Number of iterations.
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Returns
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-------
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iterator: Object
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Iterator.
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iterator.next(): Function
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Returns an iterator protocol-compliant object containing the next
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iterated value (if one exists) and a boolean flag indicating whether the
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iterator is finished.
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iterator.return( [value] ): Function
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Finishes an iterator and returns a provided value.
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iterator.PRNG: Function
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Underlying pseudorandom number generator.
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iterator.seed: Uint32Array|null
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Pseudorandom number generator seed.
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iterator.seedLength: integer|null
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Length of generator seed.
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iterator.state: Uint32Array|null
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Generator state.
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iterator.stateLength: integer|null
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Length of generator state.
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iterator.byteLength: integer|null
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Size (in bytes) of generator state.
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Examples
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--------
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> var it = {{alias}}( 1.0, 1.0 );
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> var r = it.next().value
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<number>
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> r = it.next().value
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<number>
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See Also
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--------
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