Replace math.h with cmath

src/objects-debug.cc

 // 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 383 matching lines @@
       e->Verify();
     }
   }
 }
 
 
 void FixedDoubleArray::FixedDoubleArrayVerify() {
   for (int i = 0; i < length(); i++) {
     if (!is_the_hole(i)) {
       double value = get_scalar(i);
-      CHECK(!isnan(value) ||
+      CHECK(!std::isnan(value) ||
              (BitCast<uint64_t>(value) ==
               BitCast<uint64_t>(canonical_not_the_hole_nan_as_double())) ||
              ((BitCast<uint64_t>(value) & Double::kSignMask) != 0));
     }
   }
 }
 
 
 void JSGeneratorObject::JSGeneratorObjectVerify() {
   // In an expression like "new g()", there can be a point where a generator
@@ skipping 695 matching lines @@
   for (int i = 0; i < number_of_transitions(); ++i) {
     if (!CheckOneBackPointer(current_map, GetTarget(i))) return false;
   }
   return true;
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal