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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     6 **

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

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    40 ****************************************************************************/

    41 

    42 /*

    43  * @file

    44  * @short This file is included by qatomicmathematicians_p.h

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

    46  */

    47 

    48 template <const bool isDouble>

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

    50                                                           const Operator op,

    51                                                           const Item &o2,

    52                                                           const QExplicitlySharedDataPointer<DynamicContext> &context) const

    53 {

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

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

    56     switch(op)

    57     {

    58         case Div:

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

    60         case IDiv:

    61         {

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

    63             {

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

    65                                   .arg(formatKeyword("idiv"))

    66                                   .arg(formatData("NaN")),

    67                                ReportContext::FOAR0002, this);

    68             }

    69             else if(num1->isInf())

    70             {

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

    72                                                  .arg(formatKeyword("idiv"))

    73                                                  .arg(formatData("INF")),

    74                                ReportContext::FOAR0002, this);

    75             }

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

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

    78                                                  .arg(formatKeyword("idiv"))

    79                                                  .arg(formatData("0")),

    80                                ReportContext::FOAR0001, this);

    81 

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

    83         }

    84         case Substract:

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

    86         case Mod:

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

    88         case Multiply:

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

    90         case Add:

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

    92     }

    93 

    94     Q_ASSERT(false);

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

    96 }

    97