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

tgammadratio() double tgammadratio ( double  a, double  delta  ) Ratio of gamma functions Γ(a)/Γ(a+δ) Purpose tgammadratio computes the ratio of gamma functions Γ(a)/Γ(a+δ). The result is calculated accurately even when δ is small compared to a. Returns Ratio of gamma functions Γ(a)/Γ(a+δ). Parameters [in] a Argument a. (a > 0) [in] delta Argument δ. (a + delta > 0) Error handling If a <= 0 or a + delta <= 0, domain error (EDOM) occurs. Range error (ERANGE) may occur. Reference boost/math/special_functions