# LGamma

## LGamma(X)

Returns the Log Gamma function of «X». Without numeric overflow, this function is exactly equivalent to `Ln(GammaFn(X))`

.
Because the gamma function grows so rapidly, it is often much more convenient to use LGamma() to avoid numeric overflow.

## LogBetaFn(x)

To compute `Ln(BetaFn(a,b))`

, you should instead use

which is less susceptible to numeric underflow for really large values of `a`

and `b`

.

## See Also

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