time-to-botec

Benchmark sampling in different programming languages
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      1 
      2 {{alias}}( α, β )
      3     Returns a pseudorandom number drawn from an inverse gamma distribution.
      4 
      5     If `α <= 0` or `β <= 0`, the function returns `NaN`.
      6 
      7     If `α` or `β` is `NaN`, the function returns `NaN`.
      8 
      9     Parameters
     10     ----------
     11     α: number
     12         Shape parameter.
     13 
     14     β: number
     15         Scale parameter.
     16 
     17     Returns
     18     -------
     19     r: number
     20         Pseudorandom number.
     21 
     22     Examples
     23     --------
     24     > var r = {{alias}}( 2.0, 5.0 );
     25 
     26 
     27 {{alias}}.factory( [α, β, ][options] )
     28     Returns a pseudorandom number generator (PRNG) for generating pseudorandom
     29     numbers drawn from an inverse gamma distribution.
     30 
     31     If provided `α` and `β`, the returned PRNG returns random variates drawn
     32     from the specified distribution.
     33 
     34     If not provided `α` and `β`, the returned PRNG requires that both `α` and
     35     `β` be provided at each invocation.
     36 
     37     Parameters
     38     ----------
     39     α: number (optional)
     40         Shape parameter.
     41 
     42     β: number (optional)
     43         Scale parameter.
     44 
     45     options: Object (optional)
     46         Options.
     47 
     48     options.prng: Function (optional)
     49         Pseudorandom number generator (PRNG) for generating uniformly
     50         distributed pseudorandom numbers on the interval `[0,1)`. If provided,
     51         the `state` and `seed` options are ignored. In order to seed the
     52         returned pseudorandom number generator, one must seed the provided
     53         `prng` (assuming the provided `prng` is seedable).
     54 
     55     options.seed: integer|ArrayLikeObject<integer> (optional)
     56         Pseudorandom number generator seed. The seed may be either a positive
     57         unsigned 32-bit integer or, for arbitrary length seeds, an array-like
     58         object containing unsigned 32-bit integers.
     59 
     60     options.state: Uint32Array (optional)
     61         Pseudorandom number generator state. If provided, the `seed` option is
     62         ignored.
     63 
     64     options.copy: boolean (optional)
     65         Boolean indicating whether to copy a provided pseudorandom number
     66         generator state. Setting this option to `false` allows sharing state
     67         between two or more pseudorandom number generators. Setting this option
     68         to `true` ensures that a returned generator has exclusive control over
     69         its internal state. Default: true.
     70 
     71     Returns
     72     -------
     73     rand: Function
     74         Pseudorandom number generator (PRNG).
     75 
     76     Examples
     77     --------
     78     // Basic usage:
     79     > var rand = {{alias}}.factory();
     80     > var r = rand( 1.5, 1.5 );
     81     > r = rand( 3.14, 2.25 );
     82 
     83     // Provide `α` and `β`:
     84     > rand = {{alias}}.factory( 1.5, 1.5 );
     85     > r = rand();
     86     > r = rand();
     87 
     88 
     89 {{alias}}.NAME
     90     Generator name.
     91 
     92     Examples
     93     --------
     94     > var str = {{alias}}.NAME
     95     'invgamma'
     96 
     97 
     98 {{alias}}.PRNG
     99     Underlying pseudorandom number generator.
    100 
    101     Examples
    102     --------
    103     > var prng = {{alias}}.PRNG;
    104 
    105 
    106 {{alias}}.seed
    107     Pseudorandom number generator seed.
    108 
    109     Examples
    110     --------
    111     > var seed = {{alias}}.seed;
    112 
    113 
    114 {{alias}}.seedLength
    115     Length of generator seed.
    116 
    117     Examples
    118     --------
    119     > var len = {{alias}}.seedLength;
    120 
    121 
    122 {{alias}}.state
    123     Generator state.
    124 
    125     Examples
    126     --------
    127     > var r = {{alias}}( 2.0, 5.0 )
    128     <number>
    129     > r = {{alias}}( 2.0, 5.0 )
    130     <number>
    131     > r = {{alias}}( 2.0, 5.0 )
    132     <number>
    133 
    134     // Get a copy of the current state:
    135     > var state = {{alias}}.state
    136     <Uint32Array>
    137 
    138     > r = {{alias}}( 2.0, 5.0 )
    139     <number>
    140     > r = {{alias}}( 2.0, 5.0 )
    141     <number>
    142 
    143     // Set the state:
    144     > {{alias}}.state = state;
    145 
    146     // Replay the last two pseudorandom numbers:
    147     > r = {{alias}}( 2.0, 5.0 )
    148     <number>
    149     > r = {{alias}}( 2.0, 5.0 )
    150     <number>
    151 
    152 
    153 {{alias}}.stateLength
    154     Length of generator state.
    155 
    156     Examples
    157     --------
    158     > var len = {{alias}}.stateLength;
    159 
    160 
    161 {{alias}}.byteLength
    162     Size of generator state.
    163 
    164     Examples
    165     --------
    166     > var sz = {{alias}}.byteLength;
    167 
    168 
    169 {{alias}}.toJSON()
    170     Serializes the pseudorandom number generator as a JSON object.
    171 
    172     Returns
    173     -------
    174     out: Object
    175         JSON representation.
    176 
    177     Examples
    178     --------
    179     > var o = {{alias}}.toJSON()
    180     { 'type': 'PRNG', 'name': '...', 'state': {...}, 'params': [] }
    181 
    182     See Also
    183     --------
    184