Incorrect result of Prime Number module with negative number input

[studyeveryday7]

Describe the bug

In the Prime Number module, when input a negative number like -1, then it will output will be Prime(-1).

Expected behavior

I expected the result should use the absolute input.(That mean when I input -1, the output should be Prime(1) = 2). Maybe change the input negative number to positive number can solve it, and add a dialog to show the reason.

To reproduce

1. Open NCalc+ (Which is build from latest source code)
2. Go to Prime module
3. Input -1
4. Click the evaluate bottom
5. Incorrect result has been displayed

Configuration

• Android version 9
• device MI 8 Lite

Screenshots

[MoneyMakerCqf]

hi! I can solve this issue~

[studyeveryday7]

hi! I can solve this issue~

sure！thank you