AK: Loosen FixedPoint template contraints and forward-declare it

Because AK/Concepts.h includes AK/Forward.h and concepts cannot be
forward declared, slightly losen the FixedPoint template arguments
so that we can forward declare it in AK/Forward.h

2 files changed, 6 insertions, 1 deletions

diff --git a/AK/FixedPoint.h b/AK/FixedPoint.h
index f50e514b35..a67aa81f0c 100644
--- a/AK/FixedPoint.h
+++ b/AK/FixedPoint.h
@@ -14,7 +14,8 @@
 namespace AK {
 
 // FIXME: this always uses round to nearest break-tie to even
-template<size_t precision, Integral Underlying = i32>
+// FIXME: use the Integral concept to constrain Underlying
+template<size_t precision, typename Underlying>
 class FixedPoint {
     using This = FixedPoint<precision, Underlying>;
     constexpr static Underlying radix_mask = (1 << precision) - 1;
diff --git a/AK/Forward.h b/AK/Forward.h
index 638ffaa6d8..1a682745bf 100644
--- a/AK/Forward.h
+++ b/AK/Forward.h
@@ -90,6 +90,9 @@ class Badge;
 template<typename T>
 class FixedArray;
 
+template<size_t precision, typename Underlying = i32>
+class FixedPoint;
+
 template<typename>
 class Function;
 
@@ -144,6 +147,7 @@ using AK::DuplexMemoryStream;
 using AK::Error;
 using AK::ErrorOr;
 using AK::FixedArray;
+using AK::FixedPoint;
 using AK::FlyString;
 using AK::Function;
 using AK::GenericLexer;