Cgamma Cgamr Clngam Gamdratio Gamma Gamma1pm1 Gamr Gamratio Lngam Lngams Poch Poch1

Clngam() Function Clngam ( Z As  Complex, Optional Info As  Long  ) Logarithm of gamma function ln(Γ(z)) (complex argument) Purpose This routine computes the logarithm of the gamma function at a complex number z. Returns Complex Logarithm of the gamma function ln(Γ(z)). Parameters [in] Z Argument z. (Z <> 0 and Z <> a negative integer) [out] Info (Optional) = 0: Successful exit. = -1: The argument Z had an illegal value. (Z = 0 or a negative integer) = 1: Floating point range error.