fix bernoulli_cdf_log sum header include error

Author: SteveBronder

stan/math/prim/functor/broadcast_array.hpp

@@ -6,6 +6,7 @@
 #include <stan/math/prim/meta/ref_type.hpp>
 #include <stan/math/prim/fun/Eigen.hpp>
 #include <stan/math/prim/fun/sum.hpp>
+#include <functional>
 #include <stdexcept>
 
 namespace stan {
@@ -15,12 +16,13 @@ namespace internal {
 template <typename T>
 class broadcast_array {
  private:
-  T& prim_;
+  std::reference_wrapper<T> prim_;
 
  public:
-  explicit broadcast_array(T& prim) : prim_(prim) {}
+  template <typename TT>
+  explicit broadcast_array(TT&& prim) : prim_(std::forward<TT>(prim)) {}
 
-  T& operator[](int /*i*/) { return prim_; }
+  T& operator[](int /*i*/) { return prim_.get(); }
 
   /** \ingroup type_trait
    * Broadcast array can be assigned a scalar or a vector. If assigned a scalar,
@@ -29,7 +31,7 @@ class broadcast_array {
    */
   template <typename Y>
   void operator=(const Y& m) {
-    prim_ = sum(m);
+    prim_.get() = sum(m);
   }
 };
 
@@ -40,15 +42,15 @@ class empty_broadcast_array {
   /** \ingroup type_trait
    * Not implemented so cannot be called.
    */
-  T& operator[](int /*i*/);
+  constexpr T& operator[](int /*i*/);
 
   /** \ingroup type_trait
    * Not implemented so cannot be called.
    */
   template <typename Y>
-  void operator=(const Y& /*A*/);
+  constexpr void operator=(const Y& /*A*/);
   template <typename Y>
-  void add_write_event(Y&& /* event */);
+  constexpr void add_write_event(Y&& /* event */);
 };
 
 template <typename ViewElt, typename T>

stan/math/prim/prob/bernoulli_cdf_log.hpp

@@ -13,7 +13,7 @@ namespace math {
 template <typename T_n, typename T_prob>
 inline return_type_t<T_prob> bernoulli_cdf_log(const T_n& n,
                                                const T_prob& theta) {
-  return bernoulli_lcdf<T_n, T_prob>(n, theta);
+  return bernoulli_lcdf<T_n>(n, theta);
 }
 
 }  // namespace math

test/prob/test_fixture_cdf_log.hpp

@@ -1,7 +1,7 @@
 #ifndef TEST_PROB_TEST_FIXTURE_CDF_LOG_HPP
 #define TEST_PROB_TEST_FIXTURE_CDF_LOG_HPP
 
-#include <stan/math/rev.hpp>
+#include <stan/math/mix.hpp>
 #include <test/prob/utility.hpp>
 #include <type_traits>