fix dimensionless

Author: NoureldinYosri

test/test_value_array.py

@@ -87,7 +87,7 @@ def test_dimensionless_act_like_arrays() -> None:
     y = ValueArray(1.5 * np.arange(5), 'us/ns')
 
     np.testing.assert_allclose(np.sqrt(x), np.sqrt(1.5 * np.arange(5)))
-    np.testing.assert_allclose(np.sin(y), np.sin(1.5 * np.arange(5)))
+    np.testing.assert_allclose(np.sin(y), np.sin(1.5 * np.arange(5) * 1000))
 
 
 def test_repr() -> None:

tunits/core/cython/with_unit_value_array.pyx

@@ -144,6 +144,9 @@ class ValueArray(WithUnit):
         ]:
             return getattr(ufunc, method)(*(np.asarray(x) for x in inputs), **kwargs)
 
+        if self._is_dimensionless():
+            return getattr(ufunc, method)(*(np.asarray(x) for x in inputs), **kwargs)
+
         raise NotImplemented
 
     @property