[OpenBIOS] Some thoughts on paflof.

[Parag Patel]

>a) C doesn't allow to cast pointers to integers v.v. etc. without
>   going through a union;

That's not true unless you don't want to use type-casts.

    char *foo;
    uint bar;
    foo = (char*)bar;
    bar = (uint)foo;

Gcc will warn if the sizes of "int" warn "char*" are not the same, which
is easy to workaround with an additional typecast.

    char *foo;	/* assume 32-bit pointer */
    uint64 bar;
    foo = (char*)(uint)bar;
    bar = (uint64)(uint)foo;


>b) performance is king ;)

First make it run, then make it fast.  It's a rare problem that requires
the wrong results as fast as possible. :)


	-- Parag

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