Not sure what BASIC variant you're using, but the one I use doesn't support
signed
numbers, so  x < 0  is a non functional test.

-Denny


> Dear reader,
>
> I gave a 16f628a these tasks to calculate(in basic)
>
> All variables are WORD
>
>     IF ((Second_Value - First_Value) < 0) THEN
>         Difference_Between_F_And_S_Value = Second_Value - First_Value
>         Difference_Between_S_And_T_Value = Third_Value - Second_Value
>     ELSE
>         Difference_Between_F_And_S_Value = First_Value - Second_Value
>         Difference_Between_S_And_T_Value = Second_Value - Third_Value
>     ENDIF
>
>         Difference_Between_Two_Points_As_Reference = Point_Two - Point_One
>
>         Steps_Between_F_And_S_Value = (752 *
>         Difference_Between_F_And_S_Value) /
>         Difference_Between_Two_Points_As_Reference
>
>         Steps_Between_S_And_T_Value = (752 *
>         Difference_Between_S_And_T_Value) /
>         Difference_Between_Two_Points_As_Reference
>
> These are the values being used
>
> Code:
>
> First_Value                             1423
>
> Second_Value                            951
>
> Third_Value                             931
>
> Point_One                               493
>
> Point_Two                               1702
>
> Result:
>
> Steps_Between_F_And_S_Value             22
>
> Steps_Between_S_And_T_Value             12
>
>
> According to my hand calculator and the PC's calculator
> Steps_Between_F_And_S_Value and Steps_Between_S_And_T_Value contain
> wrong results. What could be the reason for that ?
>
> Regards
>
> Thilo Klein
>
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