def test_substraction_negative_whole(self):
self.assertEqual(m.substraction(-20, -50), 30, "Expected solution: 30")
self.assertEqual(m.substraction(120, -158), 278,
"Expected solution: 278")
self.assertEqual(m.substraction(-7546467564540,
-5546455450), -7540921109090,
"Expected solution: -7 540 921 109 090")
def test_substraction_positive_decimal(self):
self.assertEqual(m.substraction(1.5, 7.125), -5.625,
"Expected solution: -5,625")
self.assertEqual(m.substraction(0.124578, 1454.15454525),
-1454.02996725, "Expected solution: -1454.02996725")
self.assertEqual(
m.substraction(4545.545654564556455, 457.154564564564525),
4088.39108999999193, "Expected solution: 4 088,39108999999193")
def test_substraction_negative_decimal(self):
self.assertEqual(m.substraction(-71.5, -227.125), 155.625,
"Expected solution: 155,625")
self.assertEqual(m.substraction(-45.78756456, 17.15454625),
-62.94211081, "Expected solution: -62,94211081")
self.assertEqual(
m.substraction(75.5456456744564, -877.15454654654655425),
952.70019222100295425, "Expected solution: 952,70019222100295425")
def calculate_result():
global amount, sum_normal, sum_square, result
sum_normal = m.multiplication(sum_normal,
(m.division(1, amount))) # 1/N * (sum x)
result = m.multiplication(sum_normal, sum_normal) # x^2
result = m.multiplication(result, amount) # N*x^2
result = m.substraction(sum_square, result) # (sum (xi^2)) - (N*x^2)
help = m.substraction(amount, 1) # N - 1
help = m.division(1, help) # 1/(N-1)
result = m.multiplication(help,
result) # (1/(N-1)) * ((sum (xi^2)) - (N*x^2))
result = m.root(2, result)
def eq_pressed(self):
x2 = float(self.result.text())
if self.pushButton_add.isChecked():
result_label = format(m.addition(self.x1, x2), '.15g')
self.pushButton_add.setChecked(False)
elif self.pushButton_sub.isChecked():
result_label = format(m.substraction(self.x1, x2), '.15g')
self.pushButton_sub.setChecked(False)
elif self.pushButton_mul.isChecked():
result_label = format(m.multiplication(self.x1, x2), '.15g')
self.pushButton_mul.setChecked(False)
elif self.pushButton_div.isChecked():
if m.division(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.division(self.x1, x2), '.15g')
self.pushButton_div.setChecked(False)
elif self.pushButton_mod.isChecked():
if m.modulo(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.modulo(self.x1, x2), '.15g')
self.pushButton_mod.setChecked(False)
elif self.pushButton_root.isChecked():
if m.root(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.root(self.x1, x2), '.15g')
self.pushButton_root.setChecked(False)
elif self.pushButton_power.isChecked():
if m.exponencial(self.x1, x2) is None:
result_label = "Undefined"
else:
result_label = format(m.exponencial(self.x1, x2), '.15g')
self.pushButton_power.setChecked(False)
else:
result_label = self.result.text()
self.result.setText(result_label)
self.x2_type = False
def test_substraction_positive_whole(self):
self.assertEqual(m.substraction(25, 30), -5, "Expected solution: -5")
self.assertEqual(m.substraction(250, 120), 130,
"Expected solution: 130")
self.assertEqual(m.substraction(2700256, 250785121), -248084865,
"Expected solution:-248 084 865")