Changes

*Gamma, Lgamma, Digamma and Trigamma functions are internal generic primitive functions.  

*Gamma, Lgamma, Digamma and Trigamma functions are internal generic primitive functions.  

*Normally the number <math>e</math> to the power <math>GAMMALN(x)</math>, where <math>x</math> is an integer, is same as <math>(x-1)!</math>.

*Normally the number <math>e</math> to the power <math>GAMMALN(x)</math>, where <math>x</math> is an integer, is same as <math>(x-1)!</math>.

*<math>GAMMALN=LN(GAMMA(x))</math>, where:

:<math>GAMMALN=LN(GAMMA(x))</math>,

<math>GAMMA(x) = \int\limits_{0}^{\infty} t^{x-1} e^{-t} dt</math>  

where

and it is for all complex numbers except the negative integers and zero.

: <math>GAMMA(x) = \int\limits_{0}^{\infty} t^{x-1} e^{-t} dt</math>  

it is for all complex numbers except the negative integers and zero.

*This function will give the result as error when

*This function will give the result as error when

  <math>x</math> is non-numeric and <math>x \le 0</math>.

  <math>x</math> is non-numeric and <math>x \le 0</math>.

==Examples==

==Examples==

#GAMMALN(6) = 4.787491744416229

#GAMMALN(6) = 4.787491744416229