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inv_Phi.hpp
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1 #ifndef STAN_MATH_FWD_SCAL_FUN_INV_PHI_HPP
2 #define STAN_MATH_FWD_SCAL_FUN_INV_PHI_HPP
3
4 #include <stan/math/fwd/core.hpp>
5
6 #include <stan/math/prim/scal/fun/inv_Phi.hpp>
7 #include <stan/math/prim/scal/fun/constants.hpp>
8 #include <stan/math/prim/scal/fun/square.hpp>
9
10 namespace stan {
11 namespace math {
12
13 template <typename T>
14 inline fvar<T> inv_Phi(const fvar<T>& p) {
15 using std::exp;
16 T xv = inv_Phi(p.val_);
17 return fvar<T>(xv,
18 p.d_ / exp(-0.5 * square(xv)) * SQRT_2_TIMES_SQRT_PI);
19 }
20 }
21 }
22 #endif
core.hpp
stan::math::fvar::d_
T d_
Definition: fvar.hpp:14
stan::math::inv_Phi
fvar< T > inv_Phi(const fvar< T > &p)
Definition: inv_Phi.hpp:14
stan
Definition: log_sum_exp.hpp:8
square.hpp
stan::math::square
fvar< T > square(const fvar< T > &x)
Definition: square.hpp:14
stan::math::SQRT_2_TIMES_SQRT_PI
const double SQRT_2_TIMES_SQRT_PI
Definition: constants.hpp:156
stan::math::fvar::val_
T val_
Definition: fvar.hpp:13
stan::math::exp
fvar< T > exp(const fvar< T > &x)
Definition: exp.hpp:10
constants.hpp
inv_Phi.hpp
stan::math::fvar
Definition: fvar.hpp:12

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