Merge pull request #554 from hvdijk/refract-mixed-precision

refract: match argument types earlier.

Author: hvdijk

modules/compiler/builtins/abacus/source/abacus_extra/refract.cpp

@@ -22,8 +22,8 @@
 #include <abacus/abacus_type_traits.h>
 
 namespace {
-template <typename T, typename U>
-T refract(const T i, const T n, const U eta) {
+template <typename T>
+T refract(const T i, const T n, const typename TypeTraits<T>::ElementType eta) {
   typedef typename TypeTraits<T>::ElementType ElementType;
 
   const ElementType intermediate = __abacus_dot(n, i);