Check for negative zero in floor when compiling with MSVC.

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 "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 24 matching lines @@
 #include "src/misc-intrinsics.h"
 #include "src/parser.h"
 #include "src/prototype.h"
 #include "src/runtime.h"
 #include "src/runtime-profiler.h"
 #include "src/scopeinfo.h"
 #include "src/smart-pointers.h"
 #include "src/string-search.h"
 #include "src/stub-cache.h"
 #include "src/uri.h"
+#include "src/utils.h"
 #include "src/v8threads.h"
 #include "src/vm-state-inl.h"
 
 #ifdef V8_I18N_SUPPORT
 #include "src/i18n.h"
 #include "unicode/brkiter.h"
 #include "unicode/calendar.h"
 #include "unicode/coll.h"
 #include "unicode/curramt.h"
 #include "unicode/datefmt.h"
@@ skipping 7650 matching lines @@
   return *isolate->factory()->NewNumber(fast_exp(x));
 }
 
 
 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));
+  return *isolate->factory()->NewNumber(Floor(x));
 }
 
 
 // Slow version of Math.pow.  We check for fast paths for special cases.
 // Used if VFP3 is not available.
 RUNTIME_FUNCTION(Runtime_MathPowSlow) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   isolate->counters()->math_pow()->Increment();
 
@@ skipping 64 matching lines @@
 
   // If the magnitude is big enough, there's no place for fraction part. If we
   // try to add 0.5 to this number, 1.0 will be added instead.
   if (exponent >= 52) {
     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));
+  return *isolate->factory()->NewNumber(Floor(value + 0.5));
 }
 
 
 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));
@@ skipping 1704 matching lines @@
   ASSERT(args.length() == 0);
   if (FLAG_log_timer_events) LOG(isolate, CurrentTimeEvent());
 
   // According to ECMA-262, section 15.9.1, page 117, the precision of
   // the number in a Date object representing a particular instant in
   // time is milliseconds. Therefore, we floor the result of getting
   // the OS time.
   double millis;
   if (FLAG_verify_predictable) {
     millis = 1388534400000.0;  // Jan 1 2014 00:00:00 GMT+0000
-    millis += std::floor(isolate->heap()->synthetic_time());
+    millis += Floor(isolate->heap()->synthetic_time());
   } else {
-    millis = std::floor(base::OS::TimeCurrentMillis());
+    millis = Floor(base::OS::TimeCurrentMillis());
   }
   return *isolate->factory()->NewNumber(millis);
 }
 
 
 RUNTIME_FUNCTION(Runtime_DateParseString) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(String, str, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSArray, output, 1);
@@ skipping 5546 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal