Fix more warnings in wtf

Source/wtf/dtoa.cpp

 /****************************************************************
  *
  * The author of this software is David M. Gay.
  *
  * Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
  * Copyright (C) 2002, 2005, 2006, 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose without fee is hereby granted, provided that this entire notice
  * is included in all copies of any software which is or includes a copy
@@ skipping 585 matching lines @@
 #undef d0
 #undef d1
 
 static const double tens[] = {
     1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
     1e10, 1e11, 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19,
     1e20, 1e21, 1e22
 };
 
 static const double bigtens[] = { 1e16, 1e32, 1e64, 1e128, 1e256 };
-static const double tinytens[] = { 1e-16, 1e-32, 1e-64, 1e-128,
-    9007199254740992. * 9007199254740992.e-256
-    /* = 2^106 * 1e-256 */
-};
 
-/* The factor of 2^53 in tinytens[4] helps us avoid setting the underflow */
-/* flag unnecessarily.  It leads to a song and dance at the end of strtod. */
 #define Scale_Bit 0x10

[Nico, 2013/10/31 21:03:40]

Scale_Bit can go too, right?

[lgombos, 2013/10/31 21:07:08]

Yep, indeed, but it does not seems to cause me any warnings or errors. Do you
see any ?

This is imported/third party code and not sure what's the policy for this.
Perhaps we should change it as little as possible ?

Just let me know if you prefer to remove it as well.

 #define n_bigtens 5
 
 static ALWAYS_INLINE int quorem(BigInt& b, BigInt& S)
 {
     size_t n;
     uint32_t* bx;
     uint32_t* bxe;
     uint32_t q;
     uint32_t* sx;
     uint32_t* sxe;
@@ skipping 687 matching lines @@
 {
     Vector<LChar> conversionBuffer(length);
     for (size_t i = 0; i < length; ++i)
         conversionBuffer[i] = isASCII(string[i]) ? string[i] : 0;
     return parseDouble(conversionBuffer.data(), length, parsedLength);
 }
 
 } // namespace Internal
 
 } // namespace WTF