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#ifndef QNUM_H

#define QNUM_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "QtCore/qglobal.h"

static const unsigned char qt_be_inf_bytes[] = { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 };

static const unsigned char qt_le_inf_bytes[] = { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f };

static inline double qtInf()

{

    return *reinterpret_cast<const double *>(QSysInfo::ByteOrder == QSysInfo::BigEndian ? qt_be_inf_bytes : qt_le_inf_bytes);

}

#define Q_INFINITY (::qtInf())

// Signaling NAN

static const unsigned char qt_be_snan_bytes[] = { 0x7f, 0xf8, 0, 0, 0, 0, 0, 0 };

static const unsigned char qt_le_snan_bytes[] = { 0, 0, 0, 0, 0, 0, 0xf8, 0x7f };

static inline double qtSnan()

{

    return *reinterpret_cast<const double *>(QSysInfo::ByteOrder == QSysInfo::BigEndian ? qt_be_snan_bytes : qt_le_snan_bytes);

}

#define Q_SNAN (::qtSnan())

// Quiet NAN

static const unsigned char qt_be_qnan_bytes[] = { 0xff, 0xf8, 0, 0, 0, 0, 0, 0 };

static const unsigned char qt_le_qnan_bytes[] = { 0, 0, 0, 0, 0, 0, 0xf8, 0xff };

static inline double qtQnan()

{

    return *reinterpret_cast<const double *>(QSysInfo::ByteOrder == QSysInfo::BigEndian ? qt_be_qnan_bytes : qt_le_qnan_bytes);

}

#define Q_QNAN (::qtQnan())

static inline bool qIsInf(double d)

{

    uchar *ch = (uchar *)&d;

    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {

        return (ch[0] & 0x7f) == 0x7f && ch[1] == 0xf0;

    } else {

        return (ch[7] & 0x7f) == 0x7f && ch[6] == 0xf0;

    }

}

static inline bool qIsNaN(double d)

{

    uchar *ch = (uchar *)&d;

    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {

        return (ch[0] & 0x7f) == 0x7f && ch[1] > 0xf0;

    } else {

        return (ch[7] & 0x7f) == 0x7f && ch[6] > 0xf0;

    }

}

static inline bool qIsFinite(double d)

{

    uchar *ch = (uchar *)&d;

    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {

        return (ch[0] & 0x7f) != 0x7f || (ch[1] & 0xf0) != 0xf0;

    } else {

        return (ch[7] & 0x7f) != 0x7f || (ch[6] & 0xf0) != 0xf0;

    }

}

static inline bool qIsInf(float d)

{

    uchar *ch = (uchar *)&d;

    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {

        return (ch[0] & 0x7f) == 0x7f && ch[1] == 0x80;

    } else {

        return (ch[3] & 0x7f) == 0x7f && ch[2] == 0x80;

    }

}

static inline bool qIsNaN(float d)

{

    uchar *ch = (uchar *)&d;

    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {

        return (ch[0] & 0x7f) == 0x7f && ch[1] > 0x80;

    } else {

        return (ch[3] & 0x7f) == 0x7f && ch[2] > 0x80;

    }

}

static inline bool qIsFinite(float d)

{

    uchar *ch = (uchar *)&d;

    if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {

        return (ch[0] & 0x7f) != 0x7f || (ch[1] & 0x80) != 0x80;

    } else {

        return (ch[3] & 0x7f) != 0x7f || (ch[2] & 0x80) != 0x80;

    }

}

#endif // QNUMERIC_P_H