torch.lgamma#

torch.lgamma(input,*,out=None)→Tensor#

Computes the natural logarithm of the absolute value of the gamma function oninput.

$${\text{out}}_i=\ln \mathrm{\mid }\mathrm{\Gamma }({\text{input}}_i)\mathrm{\mid }$$outi​=ln∣Γ(inputi​)∣

Parameters

input (Tensor) – the input tensor.

Keyword Arguments

out (Tensor,optional) – the output tensor.

Example:

>>>a=torch.arange(0.5,2,0.5)>>>torch.lgamma(a)tensor([ 0.5724,  0.0000, -0.1208])