1#ifndef STAN_MATH_PRIM_META_AD_PROMOTABLE_HPP
2#define STAN_MATH_PRIM_META_AD_PROMOTABLE_HPP
18template <
typename From,
typename To,
typename =
void>
21 std::is_convertible<std::decay_t<From>, std::decay_t<To>>::value> {};
std::integral_constant< bool, B > bool_constant
Alias for structs used for wraps a static constant of bool.
The lgamma implementation in stan-math is based on either the reentrant safe lgamma_r implementation ...