fix to crashing test

The tolerance needs to be increased because the numbers in the computations are too small.

fix to crashing test
b2dcfa8c · Razvan Pascanu · 77679d7b · b2dcfa8c
--- a/theano/scan_module/tests/test_scan.py
+++ b/theano/scan_module/tests/test_scan.py
@@ -2705,7 +2705,7 @@ class T_Scan(unittest.TestCase):
        grad_fn = theano.function([xinit, w], [gx,gw],
                                 allow_input_downcast = True)
        rng  = numpy.random.RandomState(utt.fetch_seed())
-        v_x  = numpy.array(rng.uniform(size=(5,2,3), low=-.5, high=.5),
+        v_x  = numpy.array(rng.uniform(size=(5,2,3), low=-2., high=2.),
                           dtype=theano.config.floatX)
        v_w = numpy.array(rng.uniform(size=(2,2)), dtype= theano.config.floatX)
        analytic_grad = grad_fn(v_x, v_w)