NAME

gamma − log gamma function

SYNOPSIS

jsrpc,gamma double gamma(x)
double x;

DESCRIPTION

If x is passed (in fr0) gamma returns ln |Γ(x)| (in fr0). 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.) 
error( );
y = exp(y);
if(signgam)
y = −y;

DIAGNOSTICS

The c-bit is set on negative integral arguments and the maximum value is returned.  There is no error return for C programs. 

BUGS

No error return from C.