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2.8.0
reverse mode automatic differentiation
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stan
math
prim
scal
fun
falling_factorial.hpp
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#ifndef STAN_MATH_PRIM_SCAL_FUN_FALLING_FACTORIAL_HPP
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#define STAN_MATH_PRIM_SCAL_FUN_FALLING_FACTORIAL_HPP
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#include <
stan/math/prim/scal/fun/log_falling_factorial.hpp
>
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#include <cmath>
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namespace
stan {
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namespace
math {
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template
<
typename
T1,
typename
T2>
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inline
typename
boost::math::tools::promote_args<T1, T2>::type
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falling_factorial
(
const
T1 x,
const
T2 n) {
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using
std::exp
;
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return
exp
(
log_falling_factorial
(x, n));
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}
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}
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}
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#endif
stan::math::log_falling_factorial
fvar< T > log_falling_factorial(const fvar< T > &x, const fvar< T > &n)
Definition:
log_falling_factorial.hpp:15
stan::math::exp
fvar< T > exp(const fvar< T > &x)
Definition:
exp.hpp:10
stan::math::falling_factorial
fvar< T > falling_factorial(const fvar< T > &x, const fvar< T > &n)
Definition:
falling_factorial.hpp:15
log_falling_factorial.hpp
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