Made printing of special FP values portable.

src/ostreams.cc

 // Copyright 2014 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 <algorithm>
+#include <cmath>
 
 #include "src/ostreams.h"
 
 #if V8_OS_WIN
 #define snprintf sprintf_s
 #endif
 
 namespace v8 {
 namespace internal {
 
@@ skipping 40 matching lines @@
   return print(hex_ ? "%llx" : "%lld", x);
 }
 
 
 OStream& OStream::operator<<(unsigned long long x) {  // NOLINT(runtime/int)
   return print(hex_ ? "%llx" : "%llu", x);
 }
 
 
 OStream& OStream::operator<<(double x) {
+  if (std::isinf(x)) return *this << (x < 0 ? "-inf" : "inf");
+  if (std::isnan(x)) return *this << "nan";
   return print("%g", x);
 }
 
 
 OStream& OStream::operator<<(void* x) {
   return print("%p", x);
 }
 
 
 OStream& OStream::operator<<(char x) {
@@ skipping 85 matching lines @@
 
 OStream& operator<<(OStream& os, const AsUC16& c) {
   char buf[10];
   const char* format = (0x20 <= c.value && c.value <= 0x7F)
                            ? "%c"
                            : (c.value <= 0xff) ? "\\x%02x" : "\\u%04x";
   snprintf(buf, sizeof(buf), format, c.value);
   return os << buf;
 }
 } }  // namespace v8::internal