Author: J. Wesley Cleveland
Date: 13:28:40 09/15/01
Go up one level in this thread
On September 15, 2001 at 15:23:29, Bruce Moreland wrote: >On September 15, 2001 at 14:30:40, Vincent Diepeveen wrote: > >>On September 15, 2001 at 11:14:36, Sune Fischer wrote: > >>> bb ^= mask[to_square]; // remove the bit >>> >>> movelist[++counter].from=from_square; >>> movelist[counter].to=to_square; >>> movelist[counter].piece=QUEEN; >>> movelist[counter].capturedpiece=enemy.piece[board.id[to_square]]; >> >>this looks ugly. Using a pointer here would be way faster. > >Not necessarily. If the "counter" variable is enregistered by the compiler, you >end up with about the same thing as if you used a pointer, but it also depends >upon how large the elements of "movelist" are. > >Using pointers will usually help the compiler out, because it can just indirect >through a value, rather than having to deal with scaling the value and adding it >to a constant. But in some circumstances, scaling it and adding it to a >constant is free. A good compiler should optimize this anyway.
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