lift casting to outer scope

Author: SchrodingerZhu

libc/src/__support/FPUtil/except_value_utils.h

@@ -81,17 +81,14 @@ template <typename T, size_t N> struct ExceptValues {
         StorageType out_bits = values[i].rnd_towardzero_result;
         switch (fputil::quick_get_round()) {
         case FE_UPWARD:
-          out_bits += sign ? static_cast<decltype(out_bits)>(
-                                 values[i].rnd_downward_offset)
-                           : static_cast<decltype(out_bits)>(
-                                 values[i].rnd_upward_offset);
+          out_bits += static_cast<decltype(out_bits)>(
+              sign ? values[i].rnd_downward_offset
+                   : values[i].rnd_upward_offset);
           break;
         case FE_DOWNWARD:
-          out_bits +=
-              sign
-                  ? static_cast<decltype(out_bits)>(values[i].rnd_upward_offset)
-                  : static_cast<decltype(out_bits)>(
-                        values[i].rnd_downward_offset);
+          out_bits += static_cast<decltype(out_bits)>(
+              sign ? values[i].rnd_upward_offset
+                   : values[i].rnd_downward_offset);
           break;
         case FE_TONEAREST:
           out_bits +=