medusa.georgios.enhanced_mcl

Class ExpDouble

java.lang.Object

medusa.georgios.enhanced_mcl.ExpDouble

public class ExpDouble
extends java.lang.Object

ExpDouble represents a double-precision number by a mantissa, a decimal exponent and the number of digits in the mantissa, in order to allow formatting of the represented double.

Constructor Summary

Constructors

Constructor and Description
ExpDouble(double x, int maxdigits) Creates an ExpDouble from a double, with the specified number of digits.

Method Summary

Modifier and Type	Method and Description
java.lang.String	debug()
static int	orderOfMagnitude(double x)
boolean	round(int ndigits) Round this instance to the number of significant digits
double	toDouble()
double	toDoubleUnsigned()
java.lang.String	toExpString()
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ExpDouble

public ExpDouble(double x,
                 int maxdigits)

Creates an ExpDouble from a double, with the specified number of digits.

Parameters:

x -

maxdigits -

Method Detail

round

public boolean round(int ndigits)

Round this instance to the number of significant digits

Parameters:

digits -

Returns:

whether magnitude and digits had to be changed by rounding values >9.5 to 10

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

string representation of this object

toExpString

public java.lang.String toExpString()

Returns:

a string representation in exponential notation

debug

public java.lang.String debug()

Returns:

a debug string with the part of this ExpDouble

toDoubleUnsigned

public double toDoubleUnsigned()

Returns:

double representation of this object according to rounding.

toDouble

public double toDouble()

Returns:

double representation of this object according to rounding.

orderOfMagnitude

public static int orderOfMagnitude(double x)

Parameters:

x -

Returns:

order of magnitue of x, i.e., n : x in [ 10^n, 10^(n+1) )