程序包 org.hipparchus.dfp

类 DfpDec

java.lang.Object

org.hipparchus.dfp.Dfp

org.hipparchus.dfp.DfpDec

所有已实现的接口:

CalculusFieldElement<Dfp>, FieldElement<Dfp>

直接已知子类:

Decimal10

       public class DfpDec extends Dfp
      

Subclass of Dfp which hides the radix-10000 artifacts of the superclass. This should give outward appearances of being a decimal number with DIGITS*4-3 decimal digits. This class can be subclassed to appear to be an arbitrary number of decimal digits less than DIGITS*4-3.

字段概要

从类继承的字段 org.hipparchus.dfp.Dfp

ERR_SCALE, exp, FINITE, INFINITE, mant, MAX_EXP, MIN_EXP, nans, QNAN, RADIX, sign, SNAN

构造器概要

构造器

限定符	构造器	说明
	DfpDec(Dfp d)	Copy constructor.
protected	DfpDec(DfpField factory)	Makes an instance with a value of zero.
protected	DfpDec(DfpField factory, byte x)	Create an instance from a byte value.
protected	DfpDec(DfpField factory, byte sign, byte nans)	Creates an instance with a non-finite value.
protected	DfpDec(DfpField factory, double x)	Create an instance from a double value.
protected	DfpDec(DfpField factory, int x)	Create an instance from an int value.
protected	DfpDec(DfpField factory, long x)	Create an instance from a long value.
protected	DfpDec(DfpField factory, String s)	Create an instance from a String representation.

方法概要

修饰符和类型	方法	说明
protected int	getDecimalDigits()	Get the number of decimal digits this class is going to represent.
Dfp	newInstance()	Create an instance with a value of 0.
Dfp	newInstance(byte x)	Create an instance from a byte value.
Dfp	newInstance(byte sign, byte nans)	Creates an instance with a non-finite value.
Dfp	newInstance(double x)	Create an instance corresponding to a constant real value.
Dfp	newInstance(int x)	Create an instance from an int value.
Dfp	newInstance(long x)	Create an instance from a long value.
Dfp	newInstance(String s)	Create an instance from a String representation.
Dfp	newInstance(Dfp d)	Create an instance by copying an existing one.
Dfp	nextAfter(Dfp x)	Returns the next number greater than this one in the direction of x.
protected int	round(int in)	Round this given the next digit n using the current rounding mode.

从类继承的方法 org.hipparchus.dfp.Dfp

abs, acos, acosh, add, add, align, asin, asinh, atan, atan2, atanh, cbrt, ceil, classify, complement, copysign, copySign, copySign, cos, cosh, dfp2sci, dfp2string, divide, divide, divide, dotrap, equals, exp, expm1, floor, getExponent, getField, getOne, getPi, getRadixDigits, getReal, getTwo, getZero, greaterThan, hashCode, hypot, intLog10, intValue, isInfinite, isNaN, isZero, lessThan, linearCombination, linearCombination, linearCombination, linearCombination, linearCombination, linearCombination, linearCombination, linearCombination, log, log10, log10K, log1p, multiply, multiply, multiply, negate, negativeOrNull, newInstance, positiveOrNull, pow, pow, pow, power10, power10K, reciprocal, remainder, remainder, rint, rootN, scalb, shiftLeft, shiftRight, sign, sin, sinCos, sinh, sinhCosh, sqrt, strictlyNegative, strictlyPositive, subtract, subtract, tan, tanh, toDegrees, toDouble, toRadians, toSplitDouble, toString, trap, trunc, ulp, unequal

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.hipparchus.CalculusFieldElement

isFinite, norm, round

构造器详细资料

DfpDec

             protected DfpDec(DfpField factory)
            

Makes an instance with a value of zero.

参数:

factory - factory linked to this instance

DfpDec

             protected DfpDec(DfpField factory, byte x)
            

Create an instance from a byte value.

参数:

factory - factory linked to this instance

x - value to convert to an instance

DfpDec

             protected DfpDec(DfpField factory, int x)
            

Create an instance from an int value.

参数:

factory - factory linked to this instance

x - value to convert to an instance

DfpDec

             protected DfpDec(DfpField factory, long x)
            

Create an instance from a long value.

参数:

factory - factory linked to this instance

x - value to convert to an instance

DfpDec

             protected DfpDec(DfpField factory, double x)
            

Create an instance from a double value.

参数:

factory - factory linked to this instance

x - value to convert to an instance

DfpDec

             public DfpDec(Dfp d)
            

Copy constructor.

参数:

d - instance to copy

DfpDec

             protected DfpDec(DfpField factory, String s)
            

Create an instance from a String representation.

参数:

factory - factory linked to this instance

s - string representation of the instance

DfpDec

             protected DfpDec(DfpField factory, byte sign, byte nans)
            

Creates an instance with a non-finite value.

参数:

factory - factory linked to this instance

sign - sign of the Dfp to create

nans - code of the value, must be one of Dfp.INFINITE, Dfp.SNAN, Dfp.QNAN

方法详细资料

newInstance

             public Dfp newInstance()
            

Create an instance with a value of 0. Use this internally in preference to constructors to facilitate subclasses

覆盖:

newInstance 在类中 Dfp

返回:

a new instance with a value of 0

newInstance

             public Dfp newInstance(byte x)
            

Create an instance from a byte value.

覆盖:

newInstance 在类中 Dfp

参数:

x - value to convert to an instance

返回:

a new instance with value x

newInstance

             public Dfp newInstance(int x)
            

Create an instance from an int value.

覆盖:

newInstance 在类中 Dfp

参数:

x - value to convert to an instance

返回:

a new instance with value x

newInstance

             public Dfp newInstance(long x)
            

Create an instance from a long value.

覆盖:

newInstance 在类中 Dfp

参数:

x - value to convert to an instance

返回:

a new instance with value x

newInstance

             public Dfp newInstance(double x)
            

Create an instance corresponding to a constant real value.

指定者:

newInstance 在接口中 CalculusFieldElement<Dfp>

覆盖:

newInstance 在类中 Dfp

参数:

x - constant real value

返回:

instance corresponding to a constant real value

newInstance

             public Dfp newInstance(Dfp d)
            

Create an instance by copying an existing one. Use this internally in preference to constructors to facilitate subclasses.

覆盖:

newInstance 在类中 Dfp

参数:

d - instance to copy

返回:

a new instance with the same value as d

newInstance

             public Dfp newInstance(String s)
            

Create an instance from a String representation. Use this internally in preference to constructors to facilitate subclasses.

覆盖:

newInstance 在类中 Dfp

参数:

s - string representation of the instance

返回:

a new instance parsed from specified string

newInstance

             public Dfp newInstance(byte sign, byte nans)
            

Creates an instance with a non-finite value.

覆盖:

newInstance 在类中 Dfp

参数:

sign - sign of the Dfp to create

nans - code of the value, must be one of Dfp.INFINITE, Dfp.SNAN, Dfp.QNAN

返回:

a new instance with a non-finite value

getDecimalDigits

             protected int getDecimalDigits()
            

Get the number of decimal digits this class is going to represent. Default implementation returns Dfp.getRadixDigits()*4-3. Subclasses can override this to return something less.

返回:

number of decimal digits this class is going to represent

round

             protected int round(int in)
            

Round this given the next digit n using the current rounding mode.

覆盖:

round 在类中 Dfp

参数:

in - ???

返回:

the IEEE flag if an exception occurred

nextAfter

             public Dfp nextAfter(Dfp x)
            

Returns the next number greater than this one in the direction of x. If this==x then simply returns this.

覆盖:

nextAfter 在类中 Dfp

参数:

x - 查找方向

返回:

实例在x方向上最接近的数字