Implement interface for NoAlias assignments.

* Rename the old copy_using_evaluators to noalias_copy_using_evaluators.
* Write a new copy_using_evaluators which strips NoAlias expression, if present,
  and calls noalias_copy_using_evaluators; in future, it will also take care of
  aliasing in products.
* Add expression() getter to NoAlias.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/evaluators.cpp b/test/evaluators.cpp
index a95b5319a..62ba5b126 100644
--- a/test/evaluators.cpp
+++ b/test/evaluators.cpp
@@ -60,6 +60,7 @@ void test_evaluators()
     VERIFY_IS_APPROX_EVALUATOR(d, (a + b));
     VERIFY_IS_APPROX_EVALUATOR(d, (a + b).transpose());
     VERIFY_IS_APPROX_EVALUATOR2(d, prod(a,b), a*b);
+    VERIFY_IS_APPROX_EVALUATOR2(d.noalias(), prod(a,b), a*b);
     VERIFY_IS_APPROX_EVALUATOR2(d, prod(a,b) + c, a*b + c);
     VERIFY_IS_APPROX_EVALUATOR2(d, s * prod(a,b), s * a*b);
     VERIFY_IS_APPROX_EVALUATOR2(d, prod(a,b).transpose(), (a*b).transpose());