From dc974ec0e99fa86bf4b0798ef798e2dc57f97c1f Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Mon, 18 Jul 2022 00:27:08 +0200
Subject: [PATCH] Add 'Bitboard::{ANTI_,}DIAGONAL'

---
 src/board/bitboard/mod.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/board/bitboard/mod.rs b/src/board/bitboard/mod.rs
index d2c8921..d2f3723 100644
--- a/src/board/bitboard/mod.rs
+++ b/src/board/bitboard/mod.rs
@@ -38,6 +38,12 @@ impl Bitboard {
         Bitboard(0b11111111_00000000_00000000_00000000_00000000_00000000_00000000_00000000),
     ];
 
+    /// The diagonal from [Square::A1] to [Square::H8].
+    pub const DIAGONAL: Bitboard = Bitboard(0x8040201008040201);
+
+    /// The diagonal from [Square::A8] to [Square::H1].
+    pub const ANTI_DIAGONAL: Bitboard = Bitboard(0x0102040810204080);
+
     /// Count the number of pieces in the [Bitboard].
     #[inline(always)]
     pub fn count(self) -> u32 {