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ChessEngine: Don't call non-constexpr sqrt in a constexpr intiializer

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GCC likely has a builtin intrinsic that evaluates the operation at
compile-time, even if the `LibM` is not declared as constexpr. Clang,
however, does not like it, and it failed to compile this code.
This commit is contained in:
Daniel Bertalan 2021-07-05 20:05:19 +02:00 • committed by Gunnar Beutner
parent 44b6f402ae
commit 6f6b1b3ea1
1 changed files with 1 additions and 1 deletions
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Userland/Services/ChessEngine/MCTSTree.h
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@ -36,7 +36,7 @@ public:
private:
// While static parameters are less configurable, they don't take up any
// memory in the tree, which I believe to be a worthy tradeoff.
static constexpr double s_exploration_parameter { sqrt(2) };
static constexpr double s_exploration_parameter { M_SQRT2 };
// FIXME: Optimize simulations enough for use.
static constexpr EvalMethod s_eval_method { EvalMethod::Heuristic };