func Lnpoch(a float64, x float64) float64 {
return float64(C.gsl_sf_lnpoch(C.double(a), C.double(x)))
}
/* Logarithm of Pochhammer (Apell) symbol
* log( (a)_x )
* where (a)_x := Gamma[a + x]/Gamma[a]
*
* a > 0, a+x > 0
*
*/
func LnPoch(a, x float64) (r float64) {
r = float64(C.gsl_sf_lnpoch(C.double(a), C.double(x)))
return
}