log_inv_logit.hpp

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#ifndef STAN_MATH_FWD_FUN_LOG_INV_LOGIT_HPP
#define STAN_MATH_FWD_FUN_LOG_INV_LOGIT_HPP
 
#include <stan/math/fwd/meta.hpp>
#include <stan/math/fwd/core.hpp>
#include <stan/math/prim/fun/inv_logit.hpp>
#include <stan/math/prim/fun/log_inv_logit.hpp>
#include <cmath>
 
namespace stan {
namespace math {
 
template <typename T>
inline fvar<T> log_inv_logit(const fvar<T>& x) {
  using std::exp;
  return fvar<T>(log_inv_logit(x.val_), x.d_ * inv_logit(-x.val_));
}
}  // namespace math
}  // namespace stan
#endif