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** This file is part of the QtXmlPatterns module of the Qt Toolkit.

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****************************************************************************/

#include <math.h>

#include "qabstractfloat_p.h"

#include "qboolean_p.h"

#include "qbuiltintypes_p.h"

#include "qcommonvalues_p.h"

#include "qdecimal_p.h"

#include "qinteger_p.h"

#include "qschemanumeric_p.h"

/**

 * @file Contains class Numeric. This file was originally called qnumeric.cpp,

 * but was renamed to stay consistent with qschemanumeric_p.h

 */

QT_BEGIN_NAMESPACE

using namespace QPatternist;

AtomicValue::Ptr Numeric::fromLexical(const QString &number)

{

    Q_ASSERT(!number.isEmpty());

    Q_ASSERT_X(!number.contains(QLatin1Char('e')) &&

               !number.contains(QLatin1Char('E')),

               Q_FUNC_INFO, "Should not contain any e/E");

    if(number.contains(QLatin1Char('.'))) /* an xs:decimal. */

        return Decimal::fromLexical(number);

    else /* It's an integer, of some sort. E.g, -3, -2, -1, 0, 1, 2, 3 */

        return Integer::fromLexical(number);

}

xsDouble Numeric::roundFloat(const xsDouble val)

{

    if(qIsInf(val) || AbstractFloat<true>::isEqual(val, 0.0))

        return val;

    else if(qIsNaN(val))

        return val;

    else

    {

        if(val >= -0.5 && val < 0)

            return -0.0;

        else

            return ::floor(val + 0.5);

    }

}

QT_END_NAMESPACE