[pypy-commit] pypy default: added __rsub__ for numpy boxes

[alex_gaynor]

Author: Alex Gaynor <alex.gaynor at gmail.com>
Branch: 
Changeset: r50466:c3836e8813ff
Date: 2011-12-13 13:44 -0500
http://bitbucket.org/pypy/pypy/changeset/c3836e8813ff/

Log:	added __rsub__ for numpy boxes

diff --git a/pypy/module/micronumpy/interp_boxes.py b/pypy/module/micronumpy/interp_boxes.py
--- a/pypy/module/micronumpy/interp_boxes.py
+++ b/pypy/module/micronumpy/interp_boxes.py
@@ -86,6 +86,7 @@
     descr_ge = _binop_impl("greater_equal")
 
     descr_radd = _binop_right_impl("add")
+    descr_rsub = _binop_right_impl("subtract")
     descr_rmul = _binop_right_impl("multiply")
 
     descr_neg = _unaryop_impl("negative")
@@ -170,7 +171,8 @@
     __mul__ = interp2app(W_GenericBox.descr_mul),
     __div__ = interp2app(W_GenericBox.descr_div),
 
-    __radd__ = interp2app(W_GenericBox.descr_add),
+    __radd__ = interp2app(W_GenericBox.descr_radd),
+    __rsub__ = interp2app(W_GenericBox.descr_rsub),
     __rmul__ = interp2app(W_GenericBox.descr_rmul),
 
     __eq__ = interp2app(W_GenericBox.descr_eq),
diff --git a/pypy/module/micronumpy/test/test_numarray.py b/pypy/module/micronumpy/test/test_numarray.py
--- a/pypy/module/micronumpy/test/test_numarray.py
+++ b/pypy/module/micronumpy/test/test_numarray.py
@@ -491,6 +491,11 @@
         for i in range(5):
             assert b[i] == i - 5
 
+    def test_scalar_subtract(self):
+        from numpypy import int32
+        assert int32(2) - 1 == 1
+        assert 1 - int32(2) == -1
+
     def test_mul(self):
         import numpypy