Addressed failed tests (with older python/numpy versions)

Author: Luca Citi

pytensor/tensor/rewriting/math.py

@@ -2999,7 +2999,9 @@ def isclose(x, ref, rtol=0, atol=0, num_ulps=10):
         True iff x is a constant close to ref (by default 10 ULPs).
 
     """
-    atol = atol + num_ulps * np.spacing(x)
+    x = np.asarray(x)
+    if np.issubdtype(x.dtype, np.floating):
+        atol = atol + num_ulps * np.abs(np.spacing(x.dtype.type(ref)))
     return np.allclose(x, ref, rtol=rtol, atol=atol)
 
 

tests/tensor/rewriting/test_math.py

@@ -4299,7 +4299,8 @@ def test_log1msigm_to_softplus(self):
         f(np.random.random((54, 11)).astype(config.floatX))
 
         # Test close to 1
-        out = log(np.nextafter(1.0, 2.0) - sigmoid(x))
+        x_dtype = np.dtype(x.dtype).type
+        out = log(np.nextafter(x_dtype(1), x_dtype(2)) - sigmoid(x))
         f = pytensor.function([x], out, mode=self.m)
         topo = f.maker.fgraph.toposort()
         assert len(topo) == 2