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39
40 //
41 // W A R N I N G
42 // -------------
43 //
44 // This file is not part of the Qt API. It exists purely as an
45 // implementation detail. This header file may change from version to
46 // version without notice, or even be removed.
47 //
48 // We mean it.
49 //
50
51 /*
52 * @file
53 * @short This file is included by qatomicmathematicians_p.h
54 * if you need some includes, put them in qabstractfloatmathematician_p.h, outside of the namespace.
55 */
56
57 template <const bool isDouble>
calculate(const Item & o1,const Operator op,const Item & o2,const QExplicitlySharedDataPointer<DynamicContext> & context)58 Item AbstractFloatMathematician<isDouble>::calculate(const Item &o1,
59 const Operator op,
60 const Item &o2,
61 const QExplicitlySharedDataPointer<DynamicContext> &context) const
62 {
63 const Numeric *const num1 = o1.template as<Numeric>();
64 const Numeric *const num2 = o2.template as<Numeric>();
65 switch(op)
66 {
67 case Div:
68 return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() / num2->toDouble()));
69 case IDiv:
70 {
71 if(num1->isNaN() || num2->isNaN())
72 {
73 context->error(QtXmlPatterns::tr("No operand in an integer division, %1, can be %2.")
74 .arg(formatKeyword("idiv"))
75 .arg(formatData("NaN")),
76 ReportContext::FOAR0002, this);
77 }
78 else if(num1->isInf())
79 {
80 context->error(QtXmlPatterns::tr("The first operand in an integer division, %1, cannot be infinity (%2).")
81 .arg(formatKeyword("idiv"))
82 .arg(formatData("INF")),
83 ReportContext::FOAR0002, this);
84 }
85 else if(num2->toInteger() == 0)
86 context->error(QtXmlPatterns::tr("The second operand in a division, %1, cannot be zero (%2).")
87 .arg(formatKeyword("idiv"))
88 .arg(formatData("0")),
89 ReportContext::FOAR0001, this);
90
91 return Integer::fromValue(static_cast<xsInteger>(num1->toDouble() / num2->toDouble()));
92 }
93 case Substract:
94 return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() - num2->toDouble()));
95 case Mod:
96 return toItem(AbstractFloat<isDouble>::fromValue(::fmod(num1->toDouble(), num2->toDouble())));
97 case Multiply:
98 return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() * num2->toDouble()));
99 case Add:
100 return toItem(AbstractFloat<isDouble>::fromValue(num1->toDouble() + num2->toDouble()));
101 }
102
103 Q_ASSERT(false);
104 return Item(); /* GCC unbarfer. */
105 }
106
107