Re: [Glsdk-devel] The use of anonymous structures

[H. H. <hen...@gm...>]

Yes. I hope we have reached a some sort of consensus that struct-unions are
the way to go. For now, I will define the math types with anonymous unions
and structures. We can use compiler magic to suppress warnings if need be.

typedef struct {
  union {
    GLfloat data[2];
    struct {
      GLfloat x, y;
    };
  };
} GLMvec2f;


On Sun, Aug 24, 2008 at 5:16 PM, Stefanos A. <sta...@gm...> wrote:

>
>
> On Sun, Aug 24, 2008 at 6:31 AM, Branan Riley <br...@gm...> wrote:
> >         Could be a different version of MSVC giving different
> >         warnings.
>
> Actually no, just stricter warnings (warning level 4, where the default
> is 3). GCC doesn't produce any warnings even with -Wall.
>
> However, please note that the anonymous union is *not* valid C89 (fails
> to compile with "gcc -ansi"). I'm not saying this is a problem (//-style
> comments aren't valid C89 either), just something to keep in mind and
> document.
>
> // Not valid C89
> union
> {
>    float data[2];
>    struct { float x, y; };
> };
>
> /* Valid C89 */
> union foo_union
> {
>    float data[2];
>    struct bar_struct { float x, y; } bar;
> } foo;
>
> Anyone knows if these have been standardized in C99?
>
>
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-- 
Henri 'henux' Häkkinen