func Pochrel(a float64, x float64) float64 { return float64(C.gsl_sf_pochrel(C.double(a), C.double(x))) }
/* Relative Pochhammer (Apell) symbol * ((a,x) - 1)/x * where (a,x) = (a)_x := Gamma[a + x]/Gamma[a] * */ func PochRel(a, x float64) (r float64) { r = float64(C.gsl_sf_pochrel(C.double(a), C.double(x))) return }