Replace math.h with cmath

src/ic.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 1242 matching lines @@
   }
   return Handle<Code>::null();
 }
 
 
 static Handle<Object> TryConvertKey(Handle<Object> key, Isolate* isolate) {
   // This helper implements a few common fast cases for converting
   // non-smi keys of keyed loads/stores to a smi or a string.
   if (key->IsHeapNumber()) {
     double value = Handle<HeapNumber>::cast(key)->value();
-    if (isnan(value)) {
+    if (std::isnan(value)) {
       key = isolate->factory()->nan_string();
     } else {
       int int_value = FastD2I(value);
       if (value == int_value && Smi::IsValid(int_value)) {
         key = Handle<Smi>(Smi::FromInt(int_value), isolate);
       }
     }
   } else if (key->IsUndefined()) {
     key = isolate->factory()->undefined_string();
   }
@@ skipping 1531 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal