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@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 --------