zig

commit 97be8debabcebf3102156a6df09f5acf4e0d8f6a (tree)
parent 2680f9ab48e041108a29271f55a69d9f869461b9
Author: Andrew Kelley <superjoe30@gmail.com>
Date:   Mon,  6 Aug 2018 19:09:22 -0400

std.HashMap.autoHash: use xor instead of wrapping mult

Diffstat:
M
std/hash_map.zig
 | 
4
++--

1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/std/hash_map.zig b/std/hash_map.zig
@@ -441,9 +441,9 @@ pub fn autoHash(key: var, comptime rng: *std.rand.Random, comptime HashInt: type
         builtin.TypeId.Int => |info| {
             const unsigned_x = @bitCast(@IntType(false, info.bits), key);
             if (info.bits <= HashInt.bit_count) {
-                return HashInt(unsigned_x) *% comptime rng.scalar(HashInt);
+                return HashInt(unsigned_x) ^ comptime rng.scalar(HashInt);
             } else {
-                return @truncate(HashInt, unsigned_x *% comptime rng.scalar(@typeOf(unsigned_x)));
+                return @truncate(HashInt, unsigned_x ^ comptime rng.scalar(@typeOf(unsigned_x)));
             }
         },