perfect forwarding in parallelizing class

Andre Zapico · Andre Zapico · commit 7ca2f6d56fb3 · 2026-05-01T23:28:55.000-04:00
diff --git a/stan/math/prim/fun/exp.hpp b/stan/math/prim/fun/exp.hpp
@@ -77,9 +77,9 @@ class apply_exp {
     for (std::size_t i = r.begin(); i != r.end(); ++i) {
       a_out[i] = std::exp(a[i]);
     }
-    return a_out;
+    return a;
   }
-  apply_exp<Container>(Container a) : my_a(a) {}
+  apply_exp<Container>(Container&& a) : my_a(a) {}
 };
 
 /**

Original file line number	Diff line number	Diff line change
`@@ -77,9 +77,9 @@ class apply_exp {`
`77`	`77`	`for (std::size_t i = r.begin(); i != r.end(); ++i) {`
`78`	`78`	`a_out[i] = std::exp(a[i]);`
`79`	`79`	`}`
`80`		`- return a_out;`
	`80`	`+ return a;`
`81`	`81`	`}`
`82`		`- apply_exp<Container>(Container a) : my_a(a) {}`
	`82`	`+ apply_exp<Container>(Container&& a) : my_a(a) {}`
`83`	`83`	`};`
`84`	`84`
`85`	`85`	`/**`