factln
Log of the factorial function.
y=factln(x)
Inputs
x any real array.
y a real array of the same size as the input.


Description
For an integer array n , factln(n) returns an array of the natural logarithms of the factorials of the elements of n . For a non-integer element p , the function factln is defined to be the logarithm of the gamma function for p+1 .