diff --git a/Tests/RealTests/ApproximateEqualityTests.swift b/Tests/RealTests/ApproximateEqualityTests.swift
index d4d83fdb..9bbfc5a1 100644
--- a/Tests/RealTests/ApproximateEqualityTests.swift
+++ b/Tests/RealTests/ApproximateEqualityTests.swift
@@ -110,6 +110,15 @@ final class ElementaryFunctionTests: XCTestCase {
     }
   }
   
+  @available(iOS 14.0, watchOS 14.0, tvOS 7.0, *)
+  @available(macOS, unavailable)
+  @available(macCatalyst, unavailable)
+  func testFloat16() {
+    testSpecials(Float16.self)
+    testDefaults(Float16.self)
+    testRandom(Float16.self)
+  }
+  
   func testFloat() {
     testSpecials(Float.self)
     testDefaults(Float.self)
diff --git a/Tests/RealTests/RealTestSupport.swift b/Tests/RealTests/RealTestSupport.swift
index b61328d7..f43ab07a 100644
--- a/Tests/RealTests/RealTestSupport.swift
+++ b/Tests/RealTests/RealTestSupport.swift
@@ -86,6 +86,11 @@ internal protocol FixedWidthFloatingPoint: BinaryFloatingPoint
 where Exponent: FixedWidthInteger,
       RawSignificand: FixedWidthInteger { }
 
+@available(iOS 14.0, watchOS 14.0, tvOS 7.0, *)
+@available(macOS, unavailable)
+@available(macCatalyst, unavailable)
+extension Float16: FixedWidthFloatingPoint { }
+
 extension Float: FixedWidthFloatingPoint { }
 extension Double: FixedWidthFloatingPoint { }
 #if (arch(i386) || arch(x86_64)) && !os(Windows) && !os(Android)