glenda.party
term% ls -F
term% cat index.txt
GAMMA(3M)                                                            GAMMA(3M)



NAME
       gamma - log gamma function

SYNOPSIS
       #include <math.h>

       double gamma(x)
       double x;

DESCRIPTION
       Gamma  returns  ln  Γ(x).  The sign of Γ(x) is returned in the external
       integer signgam.  The following C program might be used to calculate Γ:

            y = gamma(x);
            if (y > 88.0)
                 error();
            y = signgam*exp(y);

DIAGNOSTICS
       A huge value is returned for negative integer arguments.

BUGS
       There should be a positive indication of error.



                                                                     GAMMA(3M)