[OpenBIOS] Some thoughts on paflof.

Parag Patel parag at codegen.com
Wed Jun 12 14:11:04 CEST 2002

>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

To unsubscribe: send mail to majordomo at freiburg.linux.de
with 'unsubscribe openbios' in the body of the message
http://www.freiburg.linux.de/OpenBIOS/ - free your system..

More information about the openbios mailing list