Package org.xlsx4j.org.apache.poi.ss.util

Class IEEEDouble

java.lang.Object

org.xlsx4j.org.apache.poi.ss.util.IEEEDouble

final class IEEEDouble
extends Object

For working with the internals of IEEE 754-2008 'binary64' (double precision) floating point numbers

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BIASED_EXPONENT_SPECIAL_VALUE	The value the exponent field gets for all NaN and Infinity values
static final int	EXPONENT_BIAS
private static final long	EXPONENT_MASK
private static final int	EXPONENT_SHIFT
static final long	FRAC_ASSUMED_HIGH_BIT
static final long	FRAC_MASK

Constructor Summary

Constructors

Constructor	Description
IEEEDouble()

Method Summary

Modifier and Type	Method	Description
static int	getBiasedExponent(long rawBits)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EXPONENT_MASK

private static final long EXPONENT_MASK

See Also:

• Constant Field Values

EXPONENT_SHIFT

private static final int EXPONENT_SHIFT

See Also:

• Constant Field Values

FRAC_MASK

public static final long FRAC_MASK

See Also:

• Constant Field Values

EXPONENT_BIAS

public static final int EXPONENT_BIAS

See Also:

• Constant Field Values

FRAC_ASSUMED_HIGH_BIT

public static final long FRAC_ASSUMED_HIGH_BIT

See Also:

• Constant Field Values

BIASED_EXPONENT_SPECIAL_VALUE

public static final int BIASED_EXPONENT_SPECIAL_VALUE

The value the exponent field gets for all NaN and Infinity values

See Also:

• Constant Field Values

Constructor Details

IEEEDouble

IEEEDouble()

Method Details

getBiasedExponent

public static int getBiasedExponent(long rawBits)

Parameters:

rawBits - the 64 bit binary representation of the double value

Returns:

the top 12 bits (sign and biased exponent value)