NAME

       lgamma - log gamma function

SYNOPSIS

       #include <math.h>

       double lgamma(double x);

DESCRIPTION

       The lgamma() function returns the log of the absolute value of the Gamma function.  The sign of the Gamma
       function is returned in the external integer signgam.

       For negative integer values of x, lgamma() returns HUGE_VAL and errno is set to ERANGE.

ERRORS

       ERANGE Invalid argument - negative integer value of x.

CONFORMING TO

       SVID 3, BSD 4.3

SEE ALSO

       infnan(3)

BSD                                               June 25, 1993                                        LGAMMA(3)