Fast double-to-ascii conversion.

src/double.h

 // Copyright 2010 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 28 matching lines @@
 
 // Helper functions for doubles.
 class Double {
  public:
   static const uint64_t kSignMask = V8_2PART_UINT64_C(0x80000000, 00000000);
   static const uint64_t kExponentMask = V8_2PART_UINT64_C(0x7FF00000, 00000000);
   static const uint64_t kSignificandMask =
       V8_2PART_UINT64_C(0x000FFFFF, FFFFFFFF);
   static const uint64_t kHiddenBit = V8_2PART_UINT64_C(0x00100000, 00000000);
 
-  Double() : d64_(0.0) {}
+  Double() : d64_(0) {}
   explicit Double(double d) : d64_(double_to_uint64(d)) {}
   explicit Double(uint64_t d64) : d64_(d64) {}
 
   DiyFp AsDiyFp() const {
     ASSERT(!IsSpecial());
     return DiyFp(Significand(), Exponent());
   }
 
   // this->Significand() must not be 0.
   DiyFp AsNormalizedDiyFp() const {
@@ skipping 15 matching lines @@
 
   // Returns the double's bit as uint64.
   uint64_t AsUint64() const {
     return d64_;
   }
 
   int Exponent() const {
     if (IsDenormal()) return kDenormalExponent;
 
     uint64_t d64 = AsUint64();
-    int biased_e = (d64 & kExponentMask) >> kSignificandSize;
+    int biased_e = static_cast<int>((d64 & kExponentMask) >> kSignificandSize);
     return biased_e - kExponentBias;
   }
 
   uint64_t Significand() const {
     uint64_t d64 = AsUint64();
     uint64_t significand = d64 & kSignificandMask;
     if (!IsDenormal()) {
       return significand + kHiddenBit;
     } else {
       return significand;
@@ skipping 64 matching lines @@
   static const int kSignificandSize = 52;  // Excludes the hidden bit.
   static const int kExponentBias = 0x3FF + kSignificandSize;
   static const int kDenormalExponent = -kExponentBias + 1;
 
   uint64_t d64_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_DOUBLE_H_