org.zkoss.math
Class BigDecimals

java.lang.Object
  extended by org.zkoss.math.BigDecimals

public class BigDecimals
extends java.lang.Object

Utilities and constants of big decimals.

Author:
tomyeh

Field Summary
static int FINE_NUMBER_PRECISION
          Represents our fine number precision.
static int FINE_NUMBER_SCALE
          Represents our fine number scale.
static java.math.BigDecimal MINUS_ONE
          Represents -1 in big decimal.
static int NUMBER_PRECISION
          Represents our number precision.
static int NUMBER_SCALE
          Represents our number scale.
static java.math.BigDecimal ONE
          Represents 1 in big decimal.
static java.math.BigDecimal ZERO
          Represents 0 in big decimal.
 
Constructor Summary
BigDecimals()
           
 
Method Summary
static java.math.BigDecimal toBigDecimal(byte v)
          Converts a byte to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(java.lang.Byte v)
          Converts a byte to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(double v, int scale)
          Converts a double to a big decimal with a scale.
static java.math.BigDecimal toBigDecimal(double v, int scale, int roundingMode)
          Converts a double to a big decimal with a scale.
static java.math.BigDecimal toBigDecimal(int v)
          Converts an integer to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(java.lang.Integer v)
          Converts an integer to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(int v, int scale)
          Converts an integer to a big decimal with a scale.
static java.math.BigDecimal toBigDecimal(long v)
          Converts a long to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(java.lang.Long v)
          Converts a long to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(long v, int scale)
          Converts an integer to a big decimal with a scale.
static java.math.BigDecimal toBigDecimal(short v)
          Converts a short to a big decimal with a scale without.
static java.math.BigDecimal toBigDecimal(java.lang.Short v)
          Converts a short to a big decimal with a scale without.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

ZERO

public static final java.math.BigDecimal ZERO
Represents 0 in big decimal.

See Also:
ONE, MINUS_ONE

ONE

public static final java.math.BigDecimal ONE
Represents 1 in big decimal.

See Also:
ZERO, MINUS_ONE

MINUS_ONE

public static final java.math.BigDecimal MINUS_ONE
Represents -1 in big decimal.

See Also:
ZERO, ONE

NUMBER_PRECISION

public static final int NUMBER_PRECISION
Represents our number precision.

See Also:
Constant Field Values

NUMBER_SCALE

public static final int NUMBER_SCALE
Represents our number scale.

See Also:
Constant Field Values

FINE_NUMBER_PRECISION

public static final int FINE_NUMBER_PRECISION
Represents our fine number precision.

See Also:
Constant Field Values

FINE_NUMBER_SCALE

public static final int FINE_NUMBER_SCALE
Represents our fine number scale.

See Also:
Constant Field Values
Constructor Detail

BigDecimals

public BigDecimals()
Method Detail

toBigDecimal

public static final java.math.BigDecimal toBigDecimal(double v,
                                                      int scale,
                                                      int roundingMode)
Converts a double to a big decimal with a scale.

It is strongly deprecated to use new Dicimal(double) since the scale is unpredictable and usually surprising. Example, BigDecimal(.1) will becomes .1000000000000000055511151231257827021181583404541015625. On the other hand, BigDecimal("0.1") will be 0.1 correctly.

Parameters:
scale - the BigDecimal's scale
roundingMode - the rounding mode

toBigDecimal

public static final java.math.BigDecimal toBigDecimal(double v,
                                                      int scale)
Converts a double to a big decimal with a scale. It uses BigDecimal.ROUND_HALF_UP.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(int v,
                                                      int scale)
Converts an integer to a big decimal with a scale.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(long v,
                                                      int scale)
Converts an integer to a big decimal with a scale.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(int v)
Converts an integer to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(long v)
Converts a long to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(short v)
Converts a short to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(byte v)
Converts a byte to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(java.lang.Integer v)
Converts an integer to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(java.lang.Long v)
Converts a long to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(java.lang.Short v)
Converts a short to a big decimal with a scale without. losing precision -- zero scale in this case.


toBigDecimal

public static final java.math.BigDecimal toBigDecimal(java.lang.Byte v)
Converts a byte to a big decimal with a scale without. losing precision -- zero scale in this case.



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