| Modifier and Type | Class and Description | 
|---|---|
| static class  | DfpField.RoundingModeEnumerate for rounding modes. | 
| Modifier and Type | Field and Description | 
|---|---|
| static int | FLAG_DIV_ZEROIEEE 854-1987 flag for division by zero. | 
| static int | FLAG_INEXACTIEEE 854-1987 flag for inexact result. | 
| static int | FLAG_INVALIDIEEE 854-1987 flag for invalid operation. | 
| static int | FLAG_OVERFLOWIEEE 854-1987 flag for overflow. | 
| static int | FLAG_UNDERFLOWIEEE 854-1987 flag for underflow. | 
| Constructor and Description | 
|---|
| DfpField(int decimalDigits)Create a factory for the specified number of radix digits. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | clearIEEEFlags()Clears the IEEE 854 status flags. | 
| static Dfp | computeExp(Dfp a,
          Dfp one)Compute exp(a). | 
| static Dfp | computeLn(Dfp a,
         Dfp one,
         Dfp two)Compute ln(a). | 
| Dfp | getE()Get the constant e. | 
| Dfp[] | getESplit()Get the constant e split in two pieces. | 
| int | getIEEEFlags()Get the IEEE 854 status flags. | 
| Dfp | getLn10()Get the constant ln(10). | 
| Dfp | getLn2()Get the constant ln(2). | 
| Dfp[] | getLn2Split()Get the constant ln(2) split in two pieces. | 
| Dfp | getLn5()Get the constant ln(5). | 
| Dfp[] | getLn5Split()Get the constant ln(5) split in two pieces. | 
| Dfp | getOne()Get the constant 1. | 
| Dfp | getPi()Get the constant π. | 
| Dfp[] | getPiSplit()Get the constant π split in two pieces. | 
| int | getRadixDigits()Get the number of radix digits of the  Dfpinstances built by this factory. | 
| DfpField.RoundingMode | getRoundingMode()Get the current rounding mode. | 
| Class<? extends FieldElement<Dfp>> | getRuntimeClass()Returns the runtime class of the FieldElement. | 
| Dfp | getSqr2()Get the constant √2. | 
| Dfp | getSqr2Reciprocal()Get the constant √2 / 2. | 
| Dfp[] | getSqr2Split()Get the constant √2 split in two pieces. | 
| Dfp | getSqr3()Get the constant √3. | 
| Dfp | getSqr3Reciprocal()Get the constant √3 / 3. | 
| Dfp | getTwo()Get the constant 2. | 
| Dfp | getZero()Get the constant 0. | 
| Dfp | newDfp()Makes a  Dfpwith a value of 0. | 
| Dfp | newDfp(byte x)Create an instance from a byte value. | 
| Dfp | newDfp(byte sign,
      byte nans)Creates a  Dfpwith a non-finite value. | 
| Dfp | newDfp(Dfp d)Copy constructor. | 
| Dfp | newDfp(double x)Create an instance from a double value. | 
| Dfp | newDfp(int x)Create an instance from an int value. | 
| Dfp | newDfp(long x)Create an instance from a long value. | 
| Dfp | newDfp(String s)Create a  Dfpgiven a String representation. | 
| void | setIEEEFlags(int flags)Sets the IEEE 854 status flags. | 
| void | setIEEEFlagsBits(int bits)Sets some bits in the IEEE 854 status flags, without changing the already set bits. | 
| void | setRoundingMode(DfpField.RoundingMode mode)Set the rounding mode. | 
public static final int FLAG_INVALID
public static final int FLAG_DIV_ZERO
public static final int FLAG_OVERFLOW
public static final int FLAG_UNDERFLOW
public static final int FLAG_INEXACT
public DfpField(int decimalDigits)
 Note that since the Dfp class uses 10000 as its radix, each radix
 digit is equivalent to 4 decimal digits. This implies that asking for
 13, 14, 15 or 16 decimal digits will really lead to a 4 radix 10000 digits in
 all cases.
 
decimalDigits - minimal number of decimal digits.public int getRadixDigits()
Dfp instances built by this factory.public void setRoundingMode(DfpField.RoundingMode mode)
DfpField.RoundingMode.ROUND_HALF_EVEN.public DfpField.RoundingMode getRoundingMode()
public int getIEEEFlags()
clearIEEEFlags(), 
setIEEEFlags(int), 
setIEEEFlagsBits(int), 
FLAG_INVALID, 
FLAG_DIV_ZERO, 
FLAG_OVERFLOW, 
FLAG_UNDERFLOW, 
FLAG_INEXACTpublic void clearIEEEFlags()
public void setIEEEFlags(int flags)
flags - desired value for the flagsgetIEEEFlags(), 
clearIEEEFlags(), 
setIEEEFlagsBits(int), 
FLAG_INVALID, 
FLAG_DIV_ZERO, 
FLAG_OVERFLOW, 
FLAG_UNDERFLOW, 
FLAG_INEXACTpublic void setIEEEFlagsBits(int bits)
 Calling this method is equivalent to call setIEEEFlags(getIEEEFlags() | bits)
 
bits - bits to setgetIEEEFlags(), 
clearIEEEFlags(), 
setIEEEFlags(int), 
FLAG_INVALID, 
FLAG_DIV_ZERO, 
FLAG_OVERFLOW, 
FLAG_UNDERFLOW, 
FLAG_INEXACTpublic Dfp newDfp(byte x)
x - value to convert to an instanceDfp with the same value as xpublic Dfp newDfp(int x)
x - value to convert to an instanceDfp with the same value as xpublic Dfp newDfp(long x)
x - value to convert to an instanceDfp with the same value as xpublic Dfp newDfp(double x)
x - value to convert to an instanceDfp with the same value as xpublic Dfp newDfp(Dfp d)
d - instance to copyDfp with the same value as dpublic Dfp newDfp(String s)
Dfp given a String representation.s - string representation of the instanceDfp parsed from specified stringpublic Dfp newDfp(byte sign, byte nans)
Dfp with a non-finite value.sign - sign of the Dfp to createnans - code of the value, must be one of Dfp.INFINITE,
 Dfp.SNAN,  Dfp.QNANDfp with a non-finite valuepublic Dfp getZero()
public Dfp getOne()
public Class<? extends FieldElement<Dfp>> getRuntimeClass()
getRuntimeClass in interface Field<Dfp>Class object that represents the runtime
         class of this object.public Dfp[] getSqr2Split()
Dfp with value √2 split in two piecespublic Dfp getSqr2Reciprocal()
Dfp with value √2 / 2public Dfp getSqr3Reciprocal()
Dfp with value √3 / 3public Dfp[] getPiSplit()
Dfp with value π split in two piecespublic Dfp[] getESplit()
Dfp with value e split in two piecespublic Dfp[] getLn2Split()
Dfp with value ln(2) split in two piecespublic Dfp[] getLn5Split()
Dfp with value ln(5) split in two piecespublic static Dfp computeExp(Dfp a, Dfp one)
a - number for which we want the exponentialone - constant with value 1 at desired precisionpublic static Dfp computeLn(Dfp a, Dfp one, Dfp two)
a - number for which we want the exponentialone - constant with value 1 at desired precisiontwo - constant with value 2 at desired precisionCopyright © 2003–2016 The Apache Software Foundation. All rights reserved.