gamma, signgam - log gamma function (LEGACY)
#include <math.h> double gamma(double x); extern int signgam;
The gamma() function performs identically to lgamma(), including the use of signgam.
This interface need not be reentrant.
Refer to lgamma().
This interface is functionally equivalent to lgamma().
Return to lgamma().
Derived from Issue 1 of the SVID.