fix: allow for product entries of different types and avoid compile e…

…rror C2039: 'ReturnType': is not a member of 'Eigen::ScalarBinaryOpTraits...'
coin-or · Jun 30, 2022 · e10c38c · e10c38c
1 parent cfa2289
commit e10c38c
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/include/cppad/example/cppad_eigen.hpp b/include/cppad/example/cppad_eigen.hpp
@@ -156,6 +156,20 @@ namespace Eigen {
         static CppAD::AD<Base> infinity(void)
         {   return CppAD::numeric_limits< CppAD::AD<Base> >::infinity(); }
     };
+
+    /**
+     * Determines that the given binary operation of two numeric types involving
+     * an AD<Base> is allowed and what the scalar return type is
+     */
+    template<typename S, typename BinOp>
+    struct ScalarBinaryOpTraits<CppAD::AD<S>,S,BinOp>{ 
+        typedef CppAD::AD<S> ReturnType; 
+    };
+    template<typename S, typename BinOp>
+    struct ScalarBinaryOpTraits<S,CppAD::AD<S>,BinOp>
+    { 
+        typedef CppAD::AD<S> ReturnType; 
+    };
 }
 /* %$$