public class BigReal extends Object implements FieldElement<BigReal>, Comparable<BigReal>, Serializable
This class is a simple wrapper around the standard BigDecimal
in order to implement the FieldElement interface.
| Modifier and Type | Field and Description |
|---|---|
static BigReal |
ONE
A big real representing 1.
|
static BigReal |
ZERO
A big real representing 0.
|
| Constructor and Description |
|---|
BigReal(BigDecimal val)
Build an instance from a BigDecimal.
|
BigReal(BigInteger val)
Build an instance from a BigInteger.
|
BigReal(BigInteger unscaledVal,
int scale)
Build an instance from an unscaled BigInteger.
|
BigReal(BigInteger unscaledVal,
int scale,
MathContext mc)
Build an instance from an unscaled BigInteger.
|
BigReal(BigInteger val,
MathContext mc)
Build an instance from a BigInteger.
|
BigReal(char[] in)
Build an instance from a characters representation.
|
BigReal(char[] in,
int offset,
int len)
Build an instance from a characters representation.
|
BigReal(char[] in,
int offset,
int len,
MathContext mc)
Build an instance from a characters representation.
|
BigReal(char[] in,
MathContext mc)
Build an instance from a characters representation.
|
BigReal(double val)
Build an instance from a double.
|
BigReal(double val,
MathContext mc)
Build an instance from a double.
|
BigReal(int val)
Build an instance from an int.
|
BigReal(int val,
MathContext mc)
Build an instance from an int.
|
BigReal(long val)
Build an instance from a long.
|
BigReal(long val,
MathContext mc)
Build an instance from a long.
|
BigReal(String val)
Build an instance from a String representation.
|
BigReal(String val,
MathContext mc)
Build an instance from a String representation.
|
| Modifier and Type | Method and Description |
|---|---|
BigReal |
add(BigReal a)
Compute this + a.
|
BigDecimal |
bigDecimalValue()
Get the BigDecimal value corresponding to the instance.
|
int |
compareTo(BigReal a) |
BigReal |
divide(BigReal a)
Compute this ÷ a.
|
double |
doubleValue()
Get the double value corresponding to the instance.
|
boolean |
equals(Object other) |
Field<BigReal> |
getField()
Get the
Field to which the instance belongs. |
RoundingMode |
getRoundingMode()
Gets the rounding mode for division operations
The default is
RoundingMode.HALF_UP |
int |
getScale()
Sets the scale for division operations.
|
int |
hashCode() |
BigReal |
multiply(BigReal a)
Compute this × a.
|
BigReal |
multiply(int n)
Compute n × this.
|
BigReal |
negate()
Returns the additive inverse of
this element. |
BigReal |
reciprocal()
Returns the multiplicative inverse of
this element. |
void |
setRoundingMode(RoundingMode roundingMode)
Sets the rounding mode for decimal divisions.
|
void |
setScale(int scale)
Sets the scale for division operations.
|
BigReal |
subtract(BigReal a)
Compute this - a.
|
public static final BigReal ZERO
public static final BigReal ONE
public BigReal(BigDecimal val)
val - value of the instancepublic BigReal(BigInteger val)
val - value of the instancepublic BigReal(BigInteger unscaledVal, int scale)
unscaledVal - unscaled valuescale - scale to usepublic BigReal(BigInteger unscaledVal, int scale, MathContext mc)
unscaledVal - unscaled valuescale - scale to usemc - to usedpublic BigReal(BigInteger val, MathContext mc)
val - value of the instancemc - context to usepublic BigReal(char[] in)
in - character representation of the valuepublic BigReal(char[] in,
int offset,
int len)
in - character representation of the valueoffset - offset of the first character to analyzelen - length of the array slice to analyzepublic BigReal(char[] in,
int offset,
int len,
MathContext mc)
in - character representation of the valueoffset - offset of the first character to analyzelen - length of the array slice to analyzemc - context to usepublic BigReal(char[] in,
MathContext mc)
in - character representation of the valuemc - context to usepublic BigReal(double val)
val - value of the instancepublic BigReal(double val,
MathContext mc)
val - value of the instancemc - context to usepublic BigReal(int val)
val - value of the instancepublic BigReal(int val,
MathContext mc)
val - value of the instancemc - context to usepublic BigReal(long val)
val - value of the instancepublic BigReal(long val,
MathContext mc)
val - value of the instancemc - context to usepublic BigReal(String val)
val - character representation of the valuepublic BigReal(String val, MathContext mc)
val - character representation of the valuemc - context to usepublic RoundingMode getRoundingMode()
RoundingMode.HALF_UPpublic void setRoundingMode(RoundingMode roundingMode)
roundingMode - rounding mode for decimal divisionspublic int getScale()
public void setScale(int scale)
scale - scale for division operationspublic BigReal add(BigReal a)
add in interface FieldElement<BigReal>a - element to addpublic BigReal subtract(BigReal a)
subtract in interface FieldElement<BigReal>a - element to subtractpublic BigReal negate()
this element.negate in interface FieldElement<BigReal>this.public BigReal divide(BigReal a) throws MathArithmeticException
divide in interface FieldElement<BigReal>a - element to divide byMathArithmeticException - if a is zeropublic BigReal reciprocal() throws MathArithmeticException
this element.reciprocal in interface FieldElement<BigReal>this.MathArithmeticException - if this is zeropublic BigReal multiply(BigReal a)
multiply in interface FieldElement<BigReal>a - element to multiplypublic BigReal multiply(int n)
multiply in interface FieldElement<BigReal>n - Number of times this must be added to itself.public int compareTo(BigReal a)
compareTo in interface Comparable<BigReal>public double doubleValue()
public BigDecimal bigDecimalValue()
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