go Lgamma()
Lgamma()方法语法
func Lgamma(x float64) (lgamma float64, sign int)
go源码对Lgamma()方法的介绍：
Lgamma returns the natural logarithm and sign (-1 or +1) of Gamma(x).
Special cases are:
Lgamma(+Inf) = +Inf
Lgamma(0) = +Inf
Lgamma(-integer) = +Inf
Lgamma(-Inf) = -Inf
Lgamma(NaN) = NaNgolang标准库math模块中的Lgamma()方法，返回值有两个，分别为Gamma(x)的自然对数和正负号(-1 or +1)。除此之外，Lgamma(+Inf) = +Inf；Lgamma(0) = +Inf；Lgamma(-integer) = +Inf；Lgamma(-Inf) = -Inf；Lgamma(NaN) = NaN。
math.Lgamma()方法实例代码
func main() {
lgamma_v, sign := math.Lgamma(3)
fmt.Println(lgamma_v)
fmt.Println(sign)
}运行go文件，得到输出：
0.6931471805599453
1