Re: #define issues

FROM : Justin Spahr-Summers
DATE : Sat Apr 16 11:10:42 2005

Perhaps it's your typedef line? Maybe you meant

typedef double[16] matrix;

I'm not even sure if that will work.

On 4/16/05, Aaron Boothello <<email_removed>> wrote:
>  Well yeah....
> the code looks like that. it's not exactly what i typed in....it does the calculating of the rows and columns just fine. It's actually making the assignment. 'value' is a double and the elements in matrix are doubles. But i keep getting 'incompatible types in assignments'...
>
> (and it seems like the error is in "matrix[whatever] = value" for some reason)
> i cant seem to figure if it's a syntax error or what ? how would you set a value in a #define ?
>
> Cheers,
> Aaron.
>
> On Saturday, April 16, 2005, at 04:25PM, p3consulting <<email_removed>> wrote:
>
> >>
> >> #define setvalue(matrix, row, col, value) ( matrix[row+col] = value)
> >> //roughly looks like this
> >>
> >
> >row + col ?
> >
> >0 + 3 = 3 + 0
> >
> >and obviously is not what you want...
> >
> >((row * 4) + col)
> >((0 * 4) + 3) == 3 and ((3 * 4) + 0) == 12
> >
> >+
> >
> >row and col being indices in an array
> >should be int not double...
> >
> >
> >(#define are not a good idea for this kind of application..., just an
> >opinion)
> >
> >
> >Pascal Pochet
> ><email_removed>
> >----------------------------------
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> >