Add missing __hydra_dual__

contuandrea · contuandrea · commit 035e86d564ae · 2019-01-29T13:44:30.000+01:00
diff --git a/include/details/utils.h b/include/details/utils.h
@@ -419,7 +419,9 @@ std::ostream& operator<<(std::ostream& os, const hydra::tuple<T...>& tup)
 }
 
 //get sign
-template <typename T> int sgn(T val) {
+template <typename T> 
+__hydra_dual__
+int sgn(T val) {
     return (T(0) < val) - (val < T(0));
 }
 

Original file line number	Diff line number	Diff line change
`@@ -419,7 +419,9 @@ std::ostream& operator<<(std::ostream& os, const hydra::tuple<T...>& tup)`
`419`	`419`	`}`
`420`	`420`
`421`	`421`	`//get sign`
`422`		`-template <typename T> int sgn(T val) {`
	`422`	`+template <typename T>`
	`423`	`+__hydra_dual__`
	`424`	`+int sgn(T val) {`
`423`	`425`	`return (T(0) < val) - (val < T(0));`
`424`	`426`	`}`
`425`	`427`