lgamma.c File Reference

#include "../math.h"

Functions
double	lgamma (double x)
	Compute gamma function. More...

Function Documentation

lgamma()

double lgamma

(

double

x

)

Compute gamma function.

The lgamma functions compute the natural logarithm of the absolute value of gamma of x. A range error occurs if x is too large. A pole error may occur if x is a negative integer or zero.

Parameters

x	Parameter for the log-gamma function.

Returns

The lgamma functions return log_e | Γ(x) |.