Replace math.h with cmath

src/platform-solaris.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 44 matching lines @@
 #include "platform-posix.h"
 #include "platform.h"
 #include "v8threads.h"
 #include "vm-state-inl.h"
 
 
 // It seems there is a bug in some Solaris distributions (experienced in
 // SunOS 5.10 Generic_141445-09) which make it difficult or impossible to
 // access signbit() despite the availability of other C99 math functions.
 #ifndef signbit
+namespace std {
 // Test sign - usually defined in math.h
 int signbit(double x) {
   // We need to take care of the special case of both positive and negative
   // versions of zero.
   if (x == 0) {
     return fpclass(x) & FP_NZERO;
   } else {
     // This won't detect negative NaN but that should be okay since we don't
     // assume that behavior.
     return x < 0;
   }
 }
+}  // namespace std
 #endif  // signbit
 
 namespace v8 {
 namespace internal {
 
 
 // 0 is never a valid thread id on Solaris since the main thread is 1 and
 // subsequent have their ids incremented from there
 static const pthread_t kNoThread = (pthread_t) 0;
 
@@ skipping 22 matching lines @@
 }
 
 
 void OS::ReleaseStore(volatile AtomicWord* ptr, AtomicWord value) {
   __asm__ __volatile__("" : : : "memory");
   *ptr = value;
 }
 
 
 const char* OS::LocalTimezone(double time) {
-  if (isnan(time)) return "";
+  if (std::isnan(time)) return "";
   time_t tv = static_cast<time_t>(floor(time/msPerSecond));
   struct tm* t = localtime(&tv);
   if (NULL == t) return "";
   return tzname[0];  // The location of the timezone string on Solaris.
 }
 
 
 double OS::LocalTimeOffset() {
   tzset();
   return -static_cast<double>(timezone * msPerSecond);
@@ skipping 542 matching lines @@
   limit_mutex = CreateMutex();
 }
 
 
 void OS::TearDown() {
   delete limit_mutex;
 }
 
 
 } }  // namespace v8::internal