Replace math.h with cmath

src/conversions-inl.h

 // Copyright 2011 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 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_CONVERSIONS_INL_H_
 #define V8_CONVERSIONS_INL_H_
 
 #include <limits.h>        // Required for INT_MAX etc.
-#include <math.h>
 #include <float.h>         // Required for DBL_MAX and on Win32 for finite()
 #include <stdarg.h>
+#include <cmath>
 #include "globals.h"       // Required for V8_INFINITY
 
 // ----------------------------------------------------------------------------
 // Extra POSIX/ANSI functions for Win32/MSVC.
 
 #include "conversions.h"
 #include "double.h"
 #include "platform.h"
 #include "scanner.h"
 #include "strtod.h"
@@ skipping 34 matching lines @@
     // Copy least significant 32 bits of mantissa.
     OS::MemCopy(&result, mantissa_ptr, sizeof(result));
     return negative ? ~result + 1 : result;
   }
   // Large number (outside uint32 range), Infinity or NaN.
   return 0x80000000u;  // Return integer indefinite.
 }
 
 
 inline double DoubleToInteger(double x) {
-  if (isnan(x)) return 0;
-  if (!isfinite(x) || x == 0) return x;
+  if (std::isnan(x)) return 0;
+  if (!std::isfinite(x) || x == 0) return x;
   return (x >= 0) ? floor(x) : ceil(x);
 }
 
 
 int32_t DoubleToInt32(double x) {
   int32_t i = FastD2I(x);
   if (FastI2D(i) == x) return i;
   Double d(x);
   int exponent = d.Exponent();
   if (exponent < 0) {
@@ skipping 568 matching lines @@
   ASSERT(buffer_pos < kBufferSize);
   buffer[buffer_pos] = '\0';
 
   double converted = Strtod(Vector<const char>(buffer, buffer_pos), exponent);
   return (sign == NEGATIVE) ? -converted : converted;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_CONVERSIONS_INL_H_