/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** information use the contact form at https://www.qt.io/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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****************************************************************************/

#ifndef QLOCALE_TOOLS_P_H
#define QLOCALE_TOOLS_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of internal files.  This header file may change from version to version
// without notice, or even be removed.
//
// We mean it.
//

#include "qlocale_p.h"
#include "qstring.h"

#if !defined(QT_QLOCALE_NEEDS_VOLATILE)
#  if defined(Q_CC_GNU)
#    if  __GNUC__ == 4
#      define QT_QLOCALE_NEEDS_VOLATILE
#    elif defined(Q_OS_WIN)
#      define QT_QLOCALE_NEEDS_VOLATILE
#    endif
#  endif
#endif

#if defined(QT_QLOCALE_NEEDS_VOLATILE)
#   define NEEDS_VOLATILE volatile
#else
#   define NEEDS_VOLATILE
#endif

QT_BEGIN_NAMESPACE

enum StrayCharacterMode {
    TrailingJunkProhibited,
    TrailingJunkAllowed,
    WhitespacesAllowed
};

double asciiToDouble(const char *num, int numLen, bool &ok, int &processed,
                     StrayCharacterMode strayCharMode = TrailingJunkProhibited);
void doubleToAscii(double d, QLocaleData::DoubleForm form, int precision, char *buf, int bufSize,
                   bool &sign, int &length, int &decpt);

QString qulltoa(qulonglong l, int base, const QChar _zero);
Q_CORE_EXPORT QString qdtoa(qreal d, int *decpt, int *sign);

enum PrecisionMode {
    PMDecimalDigits =             0x01,
    PMSignificantDigits =   0x02,
    PMChopTrailingZeros =   0x03
};

QString &decimalForm(QChar zero, QChar decimal, QChar group,
                     QString &digits, int decpt, int precision,
                     PrecisionMode pm,
                     bool always_show_decpt,
                     bool thousands_group);
QString &exponentForm(QChar zero, QChar decimal, QChar exponential,
                      QChar group, QChar plus, QChar minus,
                      QString &digits, int decpt, int precision,
                      PrecisionMode pm,
                      bool always_show_decpt,
                      bool leading_zero_in_exponent);

inline bool isZero(double d)
{
    uchar *ch = (uchar *)&d;
    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
        return !(ch[0] & 0x7F || ch[1] || ch[2] || ch[3] || ch[4] || ch[5] || ch[6] || ch[7]);
    } else {
        return !(ch[7] & 0x7F || ch[6] || ch[5] || ch[4] || ch[3] || ch[2] || ch[1] || ch[0]);
    }
}

Q_CORE_EXPORT double qstrtod(const char *s00, char const **se, bool *ok);
Q_CORE_EXPORT double qstrntod(const char *s00, int len, char const **se, bool *ok);
qlonglong qstrtoll(const char *nptr, const char **endptr, int base, bool *ok);
qulonglong qstrtoull(const char *nptr, const char **endptr, int base, bool *ok);

QT_END_NAMESPACE

#endif