Make NaN similar to itself

In Lua, NaN does not equal itself. However, it is the same value. Make NaN similar to itself to avoid recomputations.
dphfox · Oct 14, 2023 · 695637b · 695637b
1 parent ce5ba5f
commit 695637b
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/Utility/isSimilar.lua b/src/Utility/isSimilar.lua
@@ -10,8 +10,9 @@ local function isSimilar(a: any, b: any): boolean
     if typeof(a) == "table" then
         return false
     else
-        return a == b
+        -- NaN does not equal itself but is the same
+        return a == b or a ~= a and b ~= b
     end
 end
 
-return isSimilar
+return isSimilar