Merge pull request #2631 from stan-dev/fix/value_of_rec-varmat

rok-cesnovar · web-flow · commit 3595599acbf5 · 2021-12-22T08:38:58.000+01:00
update value_of_rec to return a reference for varmat types
diff --git a/stan/math/rev/fun/value_of_rec.hpp b/stan/math/rev/fun/value_of_rec.hpp
@@ -14,7 +14,7 @@ namespace math {
  * @return Value of variable.
  */
 template <typename T>
-inline auto value_of_rec(const var_value<T>& v) {
+inline auto& value_of_rec(const var_value<T>& v) {
   return v.vi_->val_;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ namespace math {`
`14`	`14`	`* @return Value of variable.`
`15`	`15`	`*/`
`16`	`16`	`template <typename T>`
`17`		`-inline auto value_of_rec(const var_value<T>& v) {`
	`17`	`+inline auto& value_of_rec(const var_value<T>& v) {`
`18`	`18`	`return v.vi_->val_;`
`19`	`19`	`}`
`20`	`20`