Replace math.h with cmath

src/conversions.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
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 #include <stdarg.h>
-#include <math.h>
 #include <limits.h>
+#include <cmath>
 
 #include "conversions-inl.h"
 #include "dtoa.h"
 #include "strtod.h"
 #include "utils.h"
 
+#ifndef _STLP_VENDOR_CSTD
+// STLPort doesn't import fpclassify into the std namespace.
+using std::fpclassify;
+#endif
+
 namespace v8 {
 namespace internal {
 
 
 double StringToDouble(UnicodeCache* unicode_cache,
                       const char* str, int flags, double empty_string_val) {
   const char* end = str + StrLength(str);
   return InternalStringToDouble(unicode_cache, str, end, flags,
                                 empty_string_val);
 }
@@ skipping 376 matching lines @@
   if (decimal_pos > 0) result_size++;
   // Allocate result and fill in the parts.
   SimpleStringBuilder builder(result_size + 1);
   builder.AddSubstring(integer_buffer + integer_pos + 1, integer_part_size);
   if (decimal_pos > 0) builder.AddCharacter('.');
   builder.AddSubstring(decimal_buffer, decimal_pos);
   return builder.Finalize();
 }
 
 } }  // namespace v8::internal