wtf/dtoa.h

   1 /*
   2  *  Copyright (C) 2003, 2008 Apple Inc. All rights reserved.
   3  *
   4  *  This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  *  This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Library General Public License
  15  *  along with this library; see the file COPYING.LIB.  If not, write to
  16  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  *  Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #ifndef WTF_dtoa_h
  22 #define WTF_dtoa_h
  23
  24 #include <wtf/unicode/Unicode.h>
  25
  26 namespace WTF {
  27 class Mutex;
  28
  29 extern WTF::Mutex* s_dtoaP5Mutex;
  30
  31 // s00: input string. Must not be 0 and must be terminated by 0.
  32 // se: *se will have the last consumed character position + 1.
  33 double strtod(const char* s00, char** se);
  34
  35 typedef char DtoaBuffer[80];
  36
  37 void dtoa(DtoaBuffer result, double dd, bool& sign, int& exponent, unsigned& precision);
  38 void dtoaRoundSF(DtoaBuffer result, double dd, int ndigits, bool& sign, int& exponent, unsigned& precision);
  39 void dtoaRoundDP(DtoaBuffer result, double dd, int ndigits, bool& sign, int& exponent, unsigned& precision);
  40
  41 // Size = 80 for sizeof(DtoaBuffer) + some sign bits, decimal point, 'e', exponent digits.
  42 const unsigned NumberToStringBufferLength = 96;
  43 typedef UChar NumberToStringBuffer[NumberToStringBufferLength];
  44 unsigned numberToString(double, NumberToStringBuffer);
  45
  46 } // namespace WTF
  47
  48 using WTF::NumberToStringBuffer;
  49 using WTF::numberToString;
  50
  51 #endif // WTF_dtoa_h