Author: Steffen Jakob
Date: 13:31:42 07/18/02
Go up one level in this thread
On July 18, 2002 at 15:16:11, Robert Hyatt wrote:
>On July 18, 2002 at 13:39:01, Steffen Jakob wrote:
>
>>On July 18, 2002 at 13:23:23, Robert Hyatt wrote:
>>
>>>On July 18, 2002 at 12:21:26, Steffen Jakob wrote:
>>>
>>>>Hi Bob!
>>>>
>>>>On July 18, 2002 at 12:16:55, Robert Hyatt wrote:
>>>>
>>>>>
>>>>>Extensions was a debugging tool. IE I used to have a parallel array with
>>>>>the PV in one element and the extensions for that ply in another. Then when
>>>>>I dumped the PV I could see which plies had extensions applied. I took that
>>>>>out a long time back to save the time of backing up the stuff when I really
>>>>>didn't care except on rare occasions during debugging.
>>>>>
>>>>>The rest are simply carry-overs. To me a&7 is clearer than a&CONST where I
>>>>>might not remember which bits are on in CONST...
>>>>
>>>>I didn't think of making 7 const but something like this (from hossa-3.0 (aka
>>>>Jockel@ICC) source):
>>>>
>>>>template <typename T> inline File getFile(const T &s) {
>>>> return static_cast<File>(static_cast<unsigned int>(s) & 7);
>>>>}
>>>>template <typename T> inline Rank getRank(const T &s) {
>>>> return static_cast<Rank>(static_cast<unsigned int>(s) >> 3);
>>>>}
>>>>
>>>>or in C-world code
>>>>#define getFile(s) ((s)&7)
>>>>#define getRank(s) ((s)>>3)
>>>>
>>>>Greetings,
>>>>Steffen.
>>>
>>>
>>>I already do this. I have "Rank()" and "File()" macros that I use most
>>>everywhere already. Ditto for "From()", "To()", "Piece()", "Captured()" to
>>>extract that field from the 21 bit compressed move format I use internally.
>>
>><nitpicking>
>>crafty> egrep '&7\)|>>3\)' *.[ch] | grep -v '#define' | wc --lines
>> 23
>></nitpicking>
>>
>>Best wishes,
>>Steffen.
>
>
>your egrep is NFG. If you look, many of those are in init.c and in the
>chess.h file where the File() is actually defined using that pattern. :)
What's so special about init.c? I use my encapsulating code in class
constructors as well ;-) BTW: the definitions of the macros are excluded by the
2nd grep call with the -v option above.
Greetings,
Steffen.
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