Dev Builds » 20161008-0438

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Commit ID 073eed590edf992ed3aeb6c754cb0b3b394fe79d
Author atumanian
Date 2016-10-08 04:38:36 UTC
Optimisation of Position::see and Position::see_sign Stephane's patch removes the only usage of Position::see, where the returned value isn't immediately compared with a value. So I replaced this function by its optimised and more specific version see_ge. This function also supersedes the function Position::see_sign. bool Position::see_ge(Move m, Value v) const; This function tests if the SEE of a move is greater or equal than a given value. We use forward iteration on captures instread of backward one, therefore we don't need the swapList array. Also we stop as soon as we have enough information to obtain the result, avoiding unnecessary calls to the min_attacker function. Speed tests (Windows 7), 20 runs for each engine: Test engine: mean 866648, st. dev. 5964 Base engine: mean 846751, st. dev. 22846 Speedup: 1.023 Speed test by Stephane Nicolet Fishtest STC test: LLR: 2.96 (-2.94,2.94) [0.00,5.00] Total: 26040 W: 4675 L: 4442 D: 16923 No functional change.
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