1 #ifndef STAN_MATH_REV_SCAL_FUN_RISING_FACTORIAL_HPP
2 #define STAN_MATH_REV_SCAL_FUN_RISING_FACTORIAL_HPP
6 #include <boost/math/special_functions/digamma.hpp>
13 class rising_factorial_vv_vari :
public op_vv_vari {
15 rising_factorial_vv_vari(vari* avi, vari* bvi) :
30 class rising_factorial_vd_vari :
public op_vd_vari {
32 rising_factorial_vd_vari(vari* avi,
double b) :
42 class rising_factorial_dv_vari :
public op_dv_vari {
44 rising_factorial_dv_vari(
double a, vari* bvi) :
56 return var(
new rising_factorial_vd_vari(a.
vi_, b));
61 return var(
new rising_factorial_vv_vari(a.
vi_, b.
vi_));
66 return var(
new rising_factorial_dv_vari(a, b.
vi_));
Independent (input) and dependent (output) variables for gradients.
vari * vi_
Pointer to the implementation of this variable.
fvar< T > rising_factorial(const fvar< T > &x, const fvar< T > &n)
fvar< T > digamma(const fvar< T > &x)