# Documentation/How Tos/Calc: GAMMALN function

From Apache OpenOffice Wiki

## GAMMALN

Returns the natural logarithm of the gamma function.

### Syntax:

**GAMMALN(x)**

- returns the natural logarithm of Γ(
), the gamma function.**x**

must be greater than**x**.**0**

### Example:

**GAMMALN(4)**

- returns approximately 1.79.

### Issues:

- The forthcoming international standard ODFF categorises this as a mathematical function, and includes a
function which Calc does not currently implement.**GAMMA**