add iszero

petercorke · petercorke · commit b2912e8feceb · 2021-01-08T15:00:54.000+10:00
diff --git a/spatialmath/base/__init__.py b/spatialmath/base/__init__.py
@@ -122,6 +122,7 @@
     'angdiff',
     'removesmall',
     'cross',
+    'iszero',
 # spatialmath.base.animate
     'Animate',
     'Animate2',
diff --git a/spatialmath/base/test/test_vectors.py b/spatialmath/base/test/test_vectors.py
@@ -201,6 +201,10 @@ def test_iszerovec(self):
         self.assertFalse(iszerovec([0, 1]), False)
         self.assertFalse(iszerovec([0, 1, 0]), False)
 
+    def test_iszero(self):
+        self.assertTrue(iszero(0))
+        self.assertFalse(iszero(1))
+
     def test_angdiff(self):
 
         self.assertEqual(angdiff(0, 0), 0)
