Replace math.h with cmath

src/objects-inl.h

 // Copyright 2012 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 842 matching lines @@
 
 double Object::Number() {
   ASSERT(IsNumber());
   return IsSmi()
     ? static_cast<double>(reinterpret_cast<Smi*>(this)->value())
     : reinterpret_cast<HeapNumber*>(this)->value();
 }
 
 
 bool Object::IsNaN() {
-  return this->IsHeapNumber() && isnan(HeapNumber::cast(this)->value());
+  return this->IsHeapNumber() && std::isnan(HeapNumber::cast(this)->value());
 }
 
 
 MaybeObject* Object::ToSmi() {
   if (IsSmi()) return this;
   if (IsHeapNumber()) {
     double value = HeapNumber::cast(this)->value();
     int int_value = FastD2I(value);
     if (value == FastI2D(int_value) && Smi::IsValid(int_value)) {
       return Smi::FromInt(int_value);
@@ skipping 1040 matching lines @@
   } else {
     return GetHeap()->NumberFromDouble(get_scalar(index));
   }
 }
 
 
 void FixedDoubleArray::set(int index, double value) {
   ASSERT(map() != HEAP->fixed_cow_array_map() &&
          map() != HEAP->fixed_array_map());
   int offset = kHeaderSize + index * kDoubleSize;
-  if (isnan(value)) value = canonical_not_the_hole_nan_as_double();
+  if (std::isnan(value)) value = canonical_not_the_hole_nan_as_double();
   WRITE_DOUBLE_FIELD(this, offset, value);
 }
 
 
 void FixedDoubleArray::set_the_hole(int index) {
   ASSERT(map() != HEAP->fixed_cow_array_map() &&
          map() != HEAP->fixed_array_map());
   int offset = kHeaderSize + index * kDoubleSize;
   WRITE_DOUBLE_FIELD(this, offset, hole_nan_as_double());
 }
@@ skipping 4184 matching lines @@
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_