GCD function doens't work

[PaulZhu0122]

Describe the bug

In the scientific calculator module, after choosing GCD fuction and entering two integers, the calculator just displays GCD(num1, num2). It doesn't give the correct result.

Expected behavior

After entering two numbers, the greatest common divisor is expected to be displayed

To reproduce

1. Open NCalc+ (Which is build from latest source code)
2. Go to scientific calculator module
3. Choose GCD function in advanced button
4. Enter two positive integers
5. Incorrect result has been displayed

Configuration

• Android version 9
• device MI 8 Lite

Screenshots