@stdlib/stats
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Standard library statistical functions.
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{{alias}}( x, μ, b )
Evaluates the logarithm of the cumulative distribution function (CDF) for a
Laplace distribution with scale parameter `b` and location parameter `μ` at
a value `x`.
If provided `NaN` as any argument, the function returns `NaN`.
If provided `b <= 0`, the function returns `NaN`.
Parameters
----------
x: number
Input value.
μ: number
Location parameter.
b: number
Scale parameter.
Returns
-------
out: number
Evaluated logCDF.
Examples
--------
> var y = {{alias}}( 2.0, 0.0, 1.0 )
~-0.07
> y = {{alias}}( 5.0, 10.0, 3.0 )
~-2.36
> y = {{alias}}( NaN, 0.0, 1.0 )
NaN
> y = {{alias}}( 2, NaN, 1.0 )
NaN
> y = {{alias}}( 2.0, 0.0, NaN )
NaN
// Negative scale parameter:
> y = {{alias}}( 2.0, 0.0, -1.0 )
NaN
{{alias}}.factory( μ, b )
Returns a function for evaluating the logarithm of the cumulative
distribution function (CDF) of a Laplace distribution with scale parameter
`b` and location parameter `μ`.
Parameters
----------
μ: number
Location parameter.
b: number
Scale parameter.
Returns
-------
logcdf: Function
Logarithm of cumulative distribution function (CDF).
Examples
--------
> var mylogcdf = {{alias}}.factory( 2.0, 3.0 );
> var y = mylogcdf( 10.0 )
~-0.035
> y = mylogcdf( 2.0 )
~-0.693
See Also
--------