1 #ifndef STAN_MATH_PRIM_SCAL_FUN_PHI_APPROX_HPP
2 #define STAN_MATH_PRIM_SCAL_FUN_PHI_APPROX_HPP
4 #include <boost/math/tools/promotion.hpp>
22 inline typename boost::math::tools::promote_args<T>::type
fvar< T > inv_logit(const fvar< T > &x)
boost::math::tools::promote_args< T >::type Phi_approx(T x)
Approximation of the unit normal CDF.
fvar< T > pow(const fvar< T > &x1, const fvar< T > &x2)