Added same argument simplification in minus node

Author: Ezetowers

MLC/Common/LispTreeExpr/OperationNodes.py

@@ -93,6 +93,10 @@ def formal(self):
         return "(" + self._nodes[0].formal() + " - " + self._nodes[1].formal() + ")"
 
     def op_simplify(self):
+        # if both arguments are equals, return 0
+        if self._nodes[0].to_string() == self._nodes[1].to_string():
+            return LeafNode(process_float(0))
+
         # If the second argument is zero, avoid the operation.
         if self._node_arg_x_is_y(1, 0):
             return LeafNode(self._nodes[0].to_string())

MLC/GUI/Experiment/ChartConfiguration.py

@@ -55,8 +55,8 @@ class ChartConfiguration():
 
     # Min, Max, Step
     AMOUNT_POINTS = [100, 1000, 100]
-    MAX_COST_VALUES = [50, 5000, 50]
-    MIN_COST_VALUES = [-200, 0, 50]
+    MAX_COST_VALUES = [0, 500, 5]
+    MIN_COST_VALUES = [-200, 0, 5]
     MARKER_SIZE_VALUES = [1, 10, 1]
 
     def __init__(self, autogenerated_object):

tests/mlc/individual/test_simplification.py

@@ -48,6 +48,9 @@ class SimplificationTest(unittest.TestCase):
                               "test_simplify_log_node_number": "(root 0.5379)",
                               "test_simplify_log_node_sensor": "(root (log S0))",
                               "test_simplify_log_node_zero": "(root -4.6052)",
+                              "test_simplify_minus_node_equal_numbers": "(root 0.0000)",
+                              "test_simplify_minus_node_equal_sensors": "(root 0.0000)",
+                              "test_simplify_minus_node_number_and_sensor": "(root (- 3.4092 S0))",
                               "test_simplify_minus_node_both_numbers": "(root -0.8031)",
                               "test_simplify_minus_node_number_and_sensor": "(root (- 3.4092 S0))",
                               "test_simplify_minus_node_sensor_and_left_identity": "(root 0.0000)",
@@ -104,6 +107,14 @@ def test_simplify_plus_node_both_numbers(self):
         self._assert_expressions(expression, sys._getframe().f_code.co_name)
 
     ########################### MINUS NODE ####################################
+    def test_simplify_minus_node_equal_numbers(self):
+        expression = '(root (- 3.4092 3.4092))'
+        self._assert_expressions(expression, sys._getframe().f_code.co_name)
+
+    def test_simplify_minus_node_equal_sensors(self):
+        expression = '(root (- S0 S0))'
+        self._assert_expressions(expression, sys._getframe().f_code.co_name)
+
     def test_simplify_minus_node_number_and_sensor(self):
         expression = '(root (- 3.4092 S0))'
         self._assert_expressions(expression, sys._getframe().f_code.co_name)