Fix FixedUint8ClampedArray::SetValue.

src/objects.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 14470 matching lines @@
     default:
       UNREACHABLE();
       return 0;
   }
 }
 
 
 Object* ExternalUint8ClampedArray::SetValue(uint32_t index, Object* value) {
   uint8_t clamped_value = 0;
   if (index < static_cast<uint32_t>(length())) {
-    if (value->IsSmi()) {
-      int int_value = Smi::cast(value)->value();
-      if (int_value < 0) {
-        clamped_value = 0;
-      } else if (int_value > 255) {
-        clamped_value = 255;
-      } else {
-        clamped_value = static_cast<uint8_t>(int_value);
-      }
-    } else if (value->IsHeapNumber()) {
-      double double_value = HeapNumber::cast(value)->value();
-      if (!(double_value > 0)) {
-        // NaN and less than zero clamp to zero.
-        clamped_value = 0;
-      } else if (double_value > 255) {
-        // Greater than 255 clamp to 255.
-        clamped_value = 255;
-      } else {
-        // Other doubles are rounded to the nearest integer.
-        clamped_value = static_cast<uint8_t>(lrint(double_value));
-      }
-    } else {
-      // Clamp undefined to zero (default). All other types have been
-      // converted to a number type further up in the call chain.
-      ASSERT(value->IsUndefined());
-    }
+    clamped_value = clampObjectToUint8(value);
     set(index, clamped_value);
   }
   return Smi::FromInt(clamped_value);
 }
 
 
 Handle<Object> ExternalUint8ClampedArray::SetValue(
     Handle<ExternalUint8ClampedArray> array,
     uint32_t index,
     Handle<Object> value) {
@@ skipping 1836 matching lines @@
 #define ERROR_MESSAGES_TEXTS(C, T) T,
   static const char* error_messages_[] = {
       ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
   };
 #undef ERROR_MESSAGES_TEXTS
   return error_messages_[reason];
 }
 
 
 } }  // namespace v8::internal