org.codehaus.stax2.ri.typed

Class NumberUtil

java.lang.Object

org.codehaus.stax2.ri.typed.NumberUtil

public final class NumberUtil
extends Object

Helper class that contains method for converting numeric values to and from String representations.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_DOUBLE_CLEN Maximum number of characters in a serialized double is 26 (at least for Sun JDK; 19 digits for mantissa, 3 for exponent, signs for mantissa and exponent, decimal point, 'E'): but let's pad it up a little bit just to play it safe.
static int	MAX_FLOAT_CLEN JDK serializes floats same way as doubles, so let's reserve as much space
static int	MAX_INT_CLEN Maximum number of characters in a serialized integer is 11; one for (minus) sign, and then up to 10 digits
static int	MAX_LONG_CLEN Maximum number of characters in a serialized long is 21; one for (minus) sign, and then up to 20 digits

Constructor Summary

Constructors

Constructor and Description
NumberUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static int	writeDouble(double value, byte[] buffer, int offset)
static int	writeDouble(double value, char[] buffer, int offset)
static int	writeFloat(float value, byte[] buffer, int offset)
static int	writeFloat(float value, char[] buffer, int offset)
static int	writeInt(int value, byte[] buffer, int offset)
static int	writeInt(int value, char[] buffer, int offset) Note: caller must ensure that there is room for least 11 characters (leading sign, and up to 10 digits) in buffer passed.
static int	writeLong(long value, byte[] buffer, int offset)
static int	writeLong(long value, char[] buffer, int offset) Note: caller must ensure that there is room for least 21 characters (leading sign, and up to 20 digits ) in buffer passed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_INT_CLEN

public static final int MAX_INT_CLEN

Maximum number of characters in a serialized integer is 11; one for (minus) sign, and then up to 10 digits

See Also:

Constant Field Values

MAX_LONG_CLEN

public static final int MAX_LONG_CLEN

Maximum number of characters in a serialized long is 21; one for (minus) sign, and then up to 20 digits

See Also:

Constant Field Values

MAX_DOUBLE_CLEN

public static final int MAX_DOUBLE_CLEN

Maximum number of characters in a serialized double is 26 (at least for Sun JDK; 19 digits for mantissa, 3 for exponent, signs for mantissa and exponent, decimal point, 'E'): but let's pad it up a little bit just to play it safe.

See Also:

Constant Field Values

MAX_FLOAT_CLEN

public static final int MAX_FLOAT_CLEN

JDK serializes floats same way as doubles, so let's reserve as much space

See Also:

Constant Field Values

Constructor Detail

NumberUtil

public NumberUtil()

Method Detail

writeInt

public static int writeInt(int value,
           char[] buffer,
           int offset)

Note: caller must ensure that there is room for least 11 characters (leading sign, and up to 10 digits) in buffer passed.

Returns:

Offset within buffer after outputting int

writeInt

public static int writeInt(int value,
           byte[] buffer,
           int offset)

writeLong

public static int writeLong(long value,
            char[] buffer,
            int offset)

Note: caller must ensure that there is room for least 21 characters (leading sign, and up to 20 digits ) in buffer passed.

Returns:

Offset within buffer after outputting int

writeLong

public static int writeLong(long value,
            byte[] buffer,
            int offset)

writeFloat

public static int writeFloat(float value,
             char[] buffer,
             int offset)

writeFloat

public static int writeFloat(float value,
             byte[] buffer,
             int offset)

writeDouble

public static int writeDouble(double value,
              char[] buffer,
              int offset)

writeDouble

public static int writeDouble(double value,
              byte[] buffer,
              int offset)