net.sf.saxon.value
public final class DoubleValue extends NumericValue
Field Summary | |
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static Pattern | nonExponentialPattern |
static DoubleValue | NaN |
static DoubleValue | ZERO |
Constructor Summary | |
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DoubleValue(CharSequence val)
Constructor supplying a string | |
DoubleValue(double value)
Constructor supplying a double |
Method Summary | |
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NumericValue | arithmetic(int operator, NumericValue other, XPathContext context)
Evaluate a binary arithmetic operator. |
NumericValue | ceiling()
Implement the XPath ceiling() function |
AtomicValue | convertPrimitive(BuiltInAtomicType requiredType, boolean validate, XPathContext context)
Convert to target data type |
Object | convertToJava(Class target, XPathContext context)
Convert to Java object (for passing to external functions) |
static CharSequence | doubleToString(double value)
Internal method used for conversion of a double to a string |
static CharSequence | doubleToStringOLD(double value, String javaString)
Internal method used for conversion of a double to a string |
boolean | effectiveBooleanValue(XPathContext context)
Get the effective boolean value |
NumericValue | floor()
Implement the XPath floor() function |
double | getDoubleValue()
Return this numeric value as a double |
ItemType | getItemType(TypeHierarchy th)
Determine the data type of the expression |
String | getStringValue()
Convert the double to a string according to the XPath 2.0 rules |
CharSequence | getStringValueCS()
Convert the double to a string according to the XPath 2.0 rules |
int | hashCode()
Get the hashCode. |
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 |
NumericValue | negate()
Negate the value |
static void | printInternalForm(double d)
Diagnostic method |
NumericValue | round()
Implement the XPath round() function |
NumericValue | roundToHalfEven(int scale)
Implement the XPath round-to-half-even() function |
boolean | schemaEquals(Value obj)
Compare two values for equality. |
double | signum()
Determine whether the value is negative, zero, or positive |
static String | zeros(int n) |
Throws: ValidationException if the string does not have the correct lexical form for a double. Note that the error will contain no error code or context information.
Parameters: value the value of the NumericValue
Parameters: requiredType an integer identifying the required atomic type context
Returns: an AtomicValue, a value of the required type
Parameters: value the actual value
Returns: the value converted to a string, according to the XPath casting rules.
Parameters: value the actual value javaString the result of converting the double to a string using the Java conventions. This value is adjusted as necessary to cater for the differences between the Java and XPath rules.
Returns: the value converted to a string, according to the XPath casting rules.
Parameters: context
Returns: the effective boolean value (true unless the value is zero or NaN)
Returns: the value as a double
Parameters: th
Returns: Type.DOUBLE
Returns: the string value
Returns: the string value
See Also: NumericValue
Returns: -1 if negative, 0 if zero (including negative zero), +1 if positive, NaN if NaN