Avoid name clashes of builtins and runtime functions.

src/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "v8.h"
 
 #include "accessors.h"
@@ skipping 7827 matching lines @@
     int multiplier = (x < 0) ? -1 : 1;
     if (y < 0) multiplier *= 3;
     result = multiplier * kPiDividedBy4;
   } else {
     result = std::atan2(x, y);
   }
   return *isolate->factory()->NewNumber(result);
 }
 
 
-RUNTIME_FUNCTION(Runtime_MathExp) {
+RUNTIME_FUNCTION(Runtime_MathExpRT) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   isolate->counters()->math_exp()->Increment();
 
   CONVERT_DOUBLE_ARG_CHECKED(x, 0);
   lazily_initialize_fast_exp();
   return *isolate->factory()->NewNumber(fast_exp(x));
 }
 
 
-RUNTIME_FUNCTION(Runtime_MathFloor) {
+RUNTIME_FUNCTION(Runtime_MathFloorRT) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   isolate->counters()->math_floor()->Increment();
 
   CONVERT_DOUBLE_ARG_CHECKED(x, 0);
   return *isolate->factory()->NewNumber(std::floor(x));
 }
 
 
 // Slow version of Math.pow.  We check for fast paths for special cases.
@@ skipping 74 matching lines @@
     return *number;
   }
 
   if (sign && value >= -0.5) return isolate->heap()->minus_zero_value();
 
   // Do not call NumberFromDouble() to avoid extra checks.
   return *isolate->factory()->NewNumber(std::floor(value + 0.5));
 }
 
 
-RUNTIME_FUNCTION(Runtime_MathSqrt) {
+RUNTIME_FUNCTION(Runtime_MathSqrtRT) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   isolate->counters()->math_sqrt()->Increment();
 
   CONVERT_DOUBLE_ARG_CHECKED(x, 0);
   return *isolate->factory()->NewNumber(fast_sqrt(x));
 }
 
 
 RUNTIME_FUNCTION(Runtime_MathFround) {
@@ skipping 7258 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal