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java.lang.Object net.sf.saxon.value.Value<AtomicValue> net.sf.saxon.value.AtomicValue net.sf.saxon.value.NumericValue net.sf.saxon.value.DoubleValue
public final class DoubleValue
A numeric (double precision floating point) value
Field Summary | |
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static DoubleValue |
NaN
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static DoubleValue |
NEGATIVE_ZERO
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static DoubleValue |
ONE
|
static DoubleValue |
ZERO
|
Fields inherited from class net.sf.saxon.value.AtomicValue |
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typeLabel |
Fields inherited from class net.sf.saxon.value.Value |
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INDETERMINATE_ORDERING |
Fields inherited from interface net.sf.saxon.om.ValueRepresentation |
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EMPTY_VALUE_ARRAY |
Constructor Summary | |
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DoubleValue(double value)
Constructor supplying a double |
|
DoubleValue(double value,
AtomicType type)
Constructor supplying a double and an AtomicType, for creating a value that belongs to a user-defined subtype of xs:double. |
Method Summary | |
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NumericValue |
abs()
Get the absolute value as defined by the XPath abs() function |
NumericValue |
ceiling()
Implement the XPath ceiling() function |
int |
compareTo(long other)
Compare the value to a long. |
AtomicValue |
copyAsSubType(AtomicType typeLabel)
Create a copy of this atomic value, with a different type label |
static CharSequence |
doubleToString(double value)
Internal method used for conversion of a double to a string |
boolean |
effectiveBooleanValue()
Get the effective boolean value |
NumericValue |
floor()
Implement the XPath floor() function |
static DoubleValue |
fromInternalForm(String hex)
|
CharSequence |
getCanonicalLexicalRepresentation()
Get the canonical lexical representation as defined in XML Schema. |
BigDecimal |
getDecimalValue()
Get the numeric value converted to a decimal |
double |
getDoubleValue()
Return this numeric value as a double |
float |
getFloatValue()
Get the numeric value converted to a float |
CharSequence |
getPrimitiveStringValue()
Convert the double to a string according to the XPath 2.0 rules |
BuiltInAtomicType |
getPrimitiveType()
Determine the primitive type of the value. |
Comparable |
getSchemaComparable()
Get an object that implements XML Schema comparison semantics |
int |
hashCode()
Get the hashCode. |
boolean |
isIdentical(Value v)
Determine whether two atomic values are identical, as determined by XML Schema rules. |
boolean |
isNaN()
Test whether the value is the double/float value NaN |
boolean |
isWholeNumber()
Determine whether the value is a whole number, that is, whether it compares equal to some integer |
long |
longValue()
Return the numeric value as a Java long. |
static void |
main(String[] args)
|
static DoubleValue |
makeDoubleValue(double value)
Static factory method (for convenience in compiled bytecode) |
NumericValue |
negate()
Negate the value |
static void |
printInternalForm(double d)
Diagnostic method: print the sign, exponent, and significand |
NumericValue |
round(int scale)
Implement the XPath round() function |
NumericValue |
roundHalfToEven(int scale)
Implement the XPath round-to-half-even() function |
int |
signum()
Determine whether the value is negative, zero, or positive |
Methods inherited from class net.sf.saxon.value.NumericValue |
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compareTo, equals, getXPathComparable, isInteger, parseNumber, toString |
Methods inherited from class net.sf.saxon.value.AtomicValue |
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asAtomic, checkPermittedContents, getCardinality, getComponent, getItemType, getLength, getStringValue, getStringValueCS, getTypedValue, getTypeLabel, itemAt, iterate, process, setTypeLabel, subsequence |
Methods inherited from class net.sf.saxon.value.Value |
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asItem, asItem, asIterator, asValue, convertToJava, fromItem, getIterator, getSequenceLength, reduce |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
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public static final DoubleValue ZERO
public static final DoubleValue NEGATIVE_ZERO
public static final DoubleValue ONE
public static final DoubleValue NaN
Constructor Detail |
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public DoubleValue(double value)
value
- the value of the NumericValuepublic DoubleValue(double value, AtomicType type)
value
- the value of the NumericValuetype
- the type of the value. This must be a subtype of xs:double, and the
value must conform to this type. The methosd does not check these conditions.Method Detail |
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public static DoubleValue makeDoubleValue(double value)
value
- the value of the double
public AtomicValue copyAsSubType(AtomicType typeLabel)
copyAsSubType
in class AtomicValue
typeLabel
- the type label of the new copy. The caller is responsible for checking that
the value actually conforms to this type.
public BuiltInAtomicType getPrimitiveType()
getPrimitiveType
in class AtomicValue
public double getDoubleValue()
getDoubleValue
in class NumericValue
public float getFloatValue()
getFloatValue
in class NumericValue
public BigDecimal getDecimalValue() throws XPathException
getDecimalValue
in class NumericValue
XPathException
- if the value cannot be converted, for example if it is NaN or infinitepublic long longValue() throws XPathException
longValue
in class NumericValue
XPathException
- if the value cannot be convertedpublic int hashCode()
hashCode
in class NumericValue
NumericValue.hashCode()
public boolean isNaN()
isNaN
in class AtomicValue
public boolean effectiveBooleanValue()
effectiveBooleanValue
in class AtomicValue
public CharSequence getPrimitiveStringValue()
getPrimitiveStringValue
in class AtomicValue
public CharSequence getCanonicalLexicalRepresentation()
getCanonicalLexicalRepresentation
in class Value<AtomicValue>
public static CharSequence doubleToString(double value)
value
- the actual value
public NumericValue negate()
negate
in class NumericValue
public NumericValue floor()
floor
in class NumericValue
public NumericValue ceiling()
ceiling
in class NumericValue
public NumericValue round(int scale)
round
in class NumericValue
public NumericValue roundHalfToEven(int scale)
roundHalfToEven
in class NumericValue
scale
- the decimal position for rounding: e.g. 2 rounds to a
multiple of 0.01, while -2 rounds to a multiple of 100
public int signum()
signum
in class NumericValue
public boolean isWholeNumber()
isWholeNumber
in class NumericValue
public NumericValue abs()
abs
in class NumericValue
public int compareTo(long other)
compareTo
in class NumericValue
other
- the value to be compared with
public Comparable getSchemaComparable()
getSchemaComparable
in class AtomicValue
public boolean isIdentical(Value v)
Note that even this check ignores the type annotation of the value. The integer 3 and the short 3 are considered identical, even though they are not fully interchangeable. "Identical" means the same point in the value space, regardless of type annotation.
NaN is identical to itself.
isIdentical
in class AtomicValue
v
- the other value to be compared with this one
public static void printInternalForm(double d)
d
- the double to be diagnosedpublic static DoubleValue fromInternalForm(String hex)
public static void main(String[] args)
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