math.lgamma() function

The math.lgamma() function returns the natural logarithm and sign (-1 or +1) of math.gamma(x:x).

*Output data format: Record*

import "math"
math.lgamma(x: 3.14)
// Returns {lgamma: 0.8261387047770286, sign: 1}

Parameters

x

The value used in the operation.

*Data type: Float*

Special cases

math.lgamma(x: +Inf)     // Returns +Inf
math.lgamma(x: 0)        // Returns +Inf
math.lgamma(x: -integer) // Returns +Inf
math.lgamma(x: -Inf)     // Returns -Inf
math.lgamma(x: NaN)      // Returns NaN