repl.txt (1458B)
1 2 {{alias}}( x, μ, c ) 3 Evaluates the logarithm of the probability density function (PDF) for a Lévy 4 distribution with location parameter `μ` and scale parameter `c` at a value 5 `x`. 6 7 If provided `NaN` as any argument, the function returns `NaN`. 8 9 If provided `c <= 0`, the function returns `NaN`. 10 11 Parameters 12 ---------- 13 x: number 14 Input value. 15 16 μ: number 17 Location parameter. 18 19 c: number 20 Scale parameter. 21 22 Returns 23 ------- 24 out: number 25 Evaluated logPDF. 26 27 Examples 28 -------- 29 > var y = {{alias}}( 2.0, 0.0, 1.0 ) 30 ~-2.209 31 > y = {{alias}}( -1.0, 4.0, 2.0 ) 32 -Infinity 33 > y = {{alias}}( NaN, 0.0, 1.0 ) 34 NaN 35 > y = {{alias}}( 0.0, NaN, 1.0 ) 36 NaN 37 > y = {{alias}}( 0.0, 0.0, NaN ) 38 NaN 39 // Negative scale parameter: 40 > y = {{alias}}( 2.0, 0.0, -1.0 ) 41 NaN 42 43 44 {{alias}}.factory( μ, c ) 45 Returns a function for evaluating the logarithm of the probability density 46 function (PDF) of a Lévy distribution with location parameter `μ` and scale 47 parameter `c`. 48 49 Parameters 50 ---------- 51 μ: number 52 Location parameter. 53 54 c: number 55 Scale parameter. 56 57 Returns 58 ------- 59 logpdf: Function 60 Logarithm of probability density function (PDF). 61 62 Examples 63 -------- 64 > var mylogPDF = {{alias}}.factory( 10.0, 2.0 ); 65 > var y = mylogPDF( 11.0 ) 66 ~-1.572 67 68 See Also 69 -------- 70