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Code Issues Releases Wiki Activity

Better document value_to_uci()

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2010-12-30 11:46:53 +01:00
parent afe0203f98
commit 6f2e4c006c
1 changed files with 7 additions and 2 deletions
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9
src/search.cpp
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@ -1948,14 +1948,19 @@ split_point_start: // At split points actual search starts from here
}
// value_to_uci() converts a value to a string suitable for use with the UCI protocol
// value_to_uci() converts a value to a string suitable for use with the UCI
// protocol specifications:
//
// cp <x> The score from the engine's point of view in centipawns.
// mate <y> Mate in y moves, not plies. If the engine is getting mated
// use negative values for y.
std::string value_to_uci(Value v) {
std::stringstream s;
if (abs(v) < VALUE_MATE - PLY_MAX * ONE_PLY)
s << "cp " << int(v) * 100 / int(PawnValueMidgame); // Scale to pawn = 100
s << "cp " << int(v) * 100 / int(PawnValueMidgame); // Scale to centipawns
else
s << "mate " << (v > 0 ? (VALUE_MATE - v + 1) / 2 : -(VALUE_MATE + v) / 2 );