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Commit ID f7cc0026e3291cd281d2e3975a5f01f63be162aa
Author protonspring
Date 2018-04-18 18:03:52 UTC
Simplify BlockedByKing in pawn storms This patch is non-functional. Current master does four operations to determine whether an enemy pawn on this file is blocked by the king or not ``` f == file_of(ksq) && rkThem == relative_rank(Us, ksq) + 1 ) ``` By adding a direction (based on the template color), this is reduced to two operations. This works because b is limited to enemy pawns that are ahead of the king and on the current file. ``` shift<Down>(b) & ksq ``` I've added a line of code, but the number of executing instructions is reduced (I think). I'm not sure if this counts as a simplification, but it should theoretically be a little faster (barely). The code line length is also reduced making it a little easier to read. Closes No functional change.
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