cgamma cgamma_sub clgamma clgamma_sub crgamma crgamma_sub lgammas poch poch1 rgamma tgamma1pm1 tgammadratio tgammaratio

cgamma() doublecomplex cgamma ( doublecomplex  z ) Gamma function Γ(z) (complex argument) Purpose cgamma computes the gamma function at a complex number z. Returns Gamma function Γ(z). Parameters [in] z Argument z. (z != 0 and z != negative integer) Error handling If z is zero or real negative integer, domain error (EDOM) is reported. Range error (ERANGE) may occur. Reference netlib/cephes