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

clgamma() doublecomplex clgamma ( doublecomplex  z ) Logarithm of gamma function ln(Γ(z)) (complex argument) Purpose clgamma computes the logarithm of the gamma function at a complex number z. Returns Logarithm of the gamma function ln(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