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295f920116
I wrote a script to do this which is attached to the bug. TBR=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/736373003
83 lines
3.3 KiB
C++
83 lines
3.3 KiB
C++
/*
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* Copyright (C) 2003, 2008, 2012 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SKY_ENGINE_WTF_DTOA_H_
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#define SKY_ENGINE_WTF_DTOA_H_
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#include "sky/engine/wtf/ASCIICType.h"
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#include "sky/engine/wtf/WTFExport.h"
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#include "sky/engine/wtf/unicode/Unicode.h"
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#include "wtf/dtoa/double-conversion.h"
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namespace WTF {
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class Mutex;
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extern Mutex* s_dtoaP5Mutex;
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typedef char DtoaBuffer[80];
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WTF_EXPORT void dtoa(DtoaBuffer result, double dd, bool& sign, int& exponent, unsigned& precision);
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WTF_EXPORT void dtoaRoundSF(DtoaBuffer result, double dd, int ndigits, bool& sign, int& exponent, unsigned& precision);
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WTF_EXPORT void dtoaRoundDP(DtoaBuffer result, double dd, int ndigits, bool& sign, int& exponent, unsigned& precision);
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// Size = 80 for sizeof(DtoaBuffer) + some sign bits, decimal point, 'e', exponent digits.
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const unsigned NumberToStringBufferLength = 96;
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typedef char NumberToStringBuffer[NumberToStringBufferLength];
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typedef LChar NumberToLStringBuffer[NumberToStringBufferLength];
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WTF_EXPORT const char* numberToString(double, NumberToStringBuffer);
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WTF_EXPORT const char* numberToFixedPrecisionString(double, unsigned significantFigures, NumberToStringBuffer, bool truncateTrailingZeros = false);
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WTF_EXPORT const char* numberToFixedWidthString(double, unsigned decimalPlaces, NumberToStringBuffer);
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WTF_EXPORT double parseDouble(const LChar* string, size_t length, size_t& parsedLength);
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WTF_EXPORT double parseDouble(const UChar* string, size_t length, size_t& parsedLength);
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namespace Internal {
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double parseDoubleFromLongString(const UChar* string, size_t length, size_t& parsedLength);
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}
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inline double parseDouble(const LChar* string, size_t length, size_t& parsedLength)
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{
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return double_conversion::StringToDoubleConverter::StringToDouble(reinterpret_cast<const char*>(string), length, &parsedLength);
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}
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inline double parseDouble(const UChar* string, size_t length, size_t& parsedLength)
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{
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const size_t conversionBufferSize = 64;
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if (length > conversionBufferSize)
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return Internal::parseDoubleFromLongString(string, length, parsedLength);
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LChar conversionBuffer[conversionBufferSize];
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for (int i = 0; i < static_cast<int>(length); ++i)
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conversionBuffer[i] = isASCII(string[i]) ? string[i] : 0;
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return parseDouble(conversionBuffer, length, parsedLength);
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}
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} // namespace WTF
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using WTF::NumberToStringBuffer;
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using WTF::NumberToLStringBuffer;
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using WTF::numberToString;
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using WTF::numberToFixedPrecisionString;
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using WTF::numberToFixedWidthString;
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using WTF::parseDouble;
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#endif // SKY_ENGINE_WTF_DTOA_H_
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