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

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/*

 * @file

 * @short This file is included by qatomicmathematicians_p.h

 * if you need some includes, put them in qabstractfloatmathematician_p.h, outside of the namespace.

 */

template <const bool isDouble>

Item AbstractFloatMathematician<isDouble>::calculate(const Item &o1,

                                                          const Operator op,

                                                          const Item &o2,

                                                          const QExplicitlySharedDataPointer<DynamicContext> &context) const

{

    const Numeric *const num1 = o1.template as<Numeric>();

    const Numeric *const num2 = o2.template as<Numeric>();

    switch(op)

    {

        case Div:

            return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() / num2->toDouble()));

        case IDiv:

        {

            if(num1->isNaN() || num2->isNaN())

            {

                context->error(QtXmlPatterns::tr("No operand in an integer division, %1, can be %2.")

                                  .arg(formatKeyword("idiv"))

                                  .arg(formatData("NaN")),

                               ReportContext::FOAR0002, this);

            }

            else if(num1->isInf())

            {

                context->error(QtXmlPatterns::tr("The first operand in an integer division, %1, cannot be infinity (%2).")

                                                 .arg(formatKeyword("idiv"))

                                                 .arg(formatData("INF")),

                               ReportContext::FOAR0002, this);

            }

            else if(num2->toInteger() == 0)

                context->error(QtXmlPatterns::tr("The second operand in a division, %1, cannot be zero (%2).")

                                                 .arg(formatKeyword("idiv"))

                                                 .arg(formatData("0")),

                               ReportContext::FOAR0001, this);

            return Integer::fromValue(static_cast<xsInteger>(num1->toDouble() / num2->toDouble()));

        }

        case Substract:

            return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() - num2->toDouble()));

        case Mod:

            return toItem(AbstractFloat<isDouble>::fromValue(::fmod(num1->toDouble(), num2->toDouble())));

        case Multiply:

            return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() * num2->toDouble()));

        case Add:

            return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() + num2->toDouble()));

    }

    Q_ASSERT(false);

    return Item(); /* GCC unbarfer. */

}