Package org.codehaus.stax2.ri.typed
Class NumberUtil
java.lang.Object
org.codehaus.stax2.ri.typed.NumberUtil
Helper class that contains method for converting numeric
values to and from String representations.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
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 final int
JDK serializes floats same way as doubles, so let's reserve as much spacestatic final int
Maximum number of characters in a serialized integer is 11; one for (minus) sign, and then up to 10 digitsstatic final int
Maximum number of characters in a serialized long is 21; one for (minus) sign, and then up to 20 digits -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic 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.
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Field Details
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MAX_INT_CLEN
public static final int MAX_INT_CLENMaximum number of characters in a serialized integer is 11; one for (minus) sign, and then up to 10 digits- See Also:
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MAX_LONG_CLEN
public static final int MAX_LONG_CLENMaximum number of characters in a serialized long is 21; one for (minus) sign, and then up to 20 digits- See Also:
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MAX_DOUBLE_CLEN
public static final int MAX_DOUBLE_CLENMaximum 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:
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MAX_FLOAT_CLEN
public static final int MAX_FLOAT_CLENJDK serializes floats same way as doubles, so let's reserve as much space- See Also:
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Constructor Details
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NumberUtil
public NumberUtil()
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Method Details
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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
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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
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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)
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