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

poch1() double poch1 ( double  a, double  x  ) Relative Pochhammer's symbol ((a)x - 1)/x Purpose poch1 computes the relative Pochhammer's symbol. Poch1(a, x) = ((a)x - 1)/x = (Γ(a + x)/Γ(a) - 1)/x Returns Relative Pochhammer's symbol Poch1(a, x). Parameters [in] a Argument a. [in] x Argument x. (If a = 0 or negative integer, x != 0) Error handling If x = 0 and a = 0 or a = negative integer, domain error (EDOM) occurs. If the estimated precision is less than half, range error (ERANGE) occurs. Other range error (ERANGE) may occur.