[C99] Update status of DR290, which we do not yet implement

clang/test/C/drs/dr290.c

@@ -0,0 +1,20 @@
+/* RUN: %clang_cc1 -fsyntax-only -ast-dump %s | FileCheck %s
+ */
+
+/* WG14 DR290: no
+ * FLT_EVAL_METHOD and extra precision and/or range
+ *
+ * We retain an implicit conversion based on the float eval method being used
+ * instead of dropping it due to the explicit cast. See GH86304 and C23 6.5.5p7.
+ */
+
+#pragma clang fp eval_method(double)
+_Static_assert((float)(123.0F * 2.0F) == (float)246.0F, "");
+
+// CHECK: StaticAssertDecl
+// CHECK-NEXT: ImplicitCastExpr {{.*}} '_Bool' <IntegralToBoolean>
+// CHECK-NEXT: BinaryOperator {{.*}} 'int' '=='
+// NB: the following implicit cast is incorrect.
+// CHECK-NEXT: ImplicitCastExpr {{.*}} 'double' <FloatingCast> FPEvalMethod=1
+// CHECK-NEXT: CStyleCastExpr {{.*}} 'float' <FloatingCast> FPEvalMethod=1
+

clang/www/c_dr_status.html

@@ -1686,7 +1686,7 @@ conformance.</p>
     <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_290.htm">290</a></td>
     <td>C99</td>
     <td>FLT_EVAL_METHOD and extra precision and/or range</td>
-    <td class="unknown" align="center">Unknown</td>
+    <td class="none" align="center">No</td>
   </tr>
   <tr id="291">
     <td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_291.htm">291</a></td>