Package edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.io.doubleparser

Class FastFloatParser

java.lang.Object

edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.io.doubleparser.FastFloatParser

public class FastFloatParser
extends Object

Provides static method for parsing a float from a CharSequence, char array or byte array.

Method Summary

Modifier and Type	Method	Description
static float	parseFloat(char[] str)	Convenience method for calling parseFloat(char[], int, int).
static float	parseFloat(char[] str, int offset, int length)	Parses a FloatingPointLiteral from a byte-Array and converts it into a float value.
static float	parseFloat(CharSequence str)	Convenience method for calling parseFloat(CharSequence, int, int).
static float	parseFloat(CharSequence str, int offset, int length)	Parses a FloatingPointLiteral from a CharSequence and converts it into a float value.
static long	parseFloatBits(char[] str, int offset, int length)	Parses a FloatingPointLiteral from a byte-Array and converts it into a bit pattern that encodes a float value.
static long	parseFloatBits(CharSequence str, int offset, int length)	Parses a FloatingPointLiteral from a CharSequence and converts it into a bit pattern that encodes a float value.

Methods inherited from class java.lang.Object

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

Method Details

parseFloat

public static float parseFloat(CharSequence str)
                        throws NumberFormatException

Convenience method for calling parseFloat(CharSequence, int, int).

Parameters:

str - the string to be parsed

Returns:

the parsed value

Throws:

NumberFormatException - if the string can not be parsed

parseFloat

public static float parseFloat(CharSequence str,
 int offset,
 int length)
                        throws NumberFormatException

Parses a FloatingPointLiteral from a CharSequence and converts it into a float value.

See edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.io.doubleparser for the syntax of FloatingPointLiteral.

Parameters:

str - the string to be parsed

offset - the start offset of the FloatingPointLiteral in str

length - the length of FloatingPointLiteral in str

Returns:

the parsed value

Throws:

NumberFormatException - if the string can not be parsed

parseFloat

public static float parseFloat(char[] str)
                        throws NumberFormatException

Convenience method for calling parseFloat(char[], int, int).

Parameters:

str - the string to be parsed

Returns:

the parsed value

Throws:

NumberFormatException - if the string can not be parsed

parseFloat

public static float parseFloat(char[] str,
 int offset,
 int length)
                        throws NumberFormatException

Parses a FloatingPointLiteral from a byte-Array and converts it into a float value.

See edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.io.doubleparser for the syntax of FloatingPointLiteral.

Parameters:

str - the string to be parsed, a byte array with characters in ISO-8859-1, ASCII or UTF-8 encoding

offset - The index of the first character to parse

length - The number of characters to parse

Returns:

the parsed value

Throws:

NumberFormatException - if the string can not be parsed

parseFloatBits

public static long parseFloatBits(CharSequence str,
 int offset,
 int length)

Parses a FloatingPointLiteral from a CharSequence and converts it into a bit pattern that encodes a float value.

See edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.io.doubleparser for the syntax of FloatingPointLiteral.

Usage example:

     long bitPattern = parseFloatBits("3.14", 0, 4);
     if (bitPattern == -1L) {
         ...handle parse error...
     } else {
         double d = Double.longBitsToDouble(bitPattern);
     }
 

Parameters:

str - the string to be parsed

offset - the start offset of the FloatingPointLiteral in str

length - the length of FloatingPointLiteral in str

Returns:

the bit pattern of the parsed value, if the input is legal; otherwise, -1L.

parseFloatBits

public static long parseFloatBits(char[] str,
 int offset,
 int length)

Parses a FloatingPointLiteral from a byte-Array and converts it into a bit pattern that encodes a float value.

See edu.internet2.middleware.grouperClientExt.com.fasterxml.jackson.core.io.doubleparser for the syntax of FloatingPointLiteral.

See parseFloatBits(CharSequence, int, int) for a usage example.

Parameters:

str - the string to be parsed, a byte array with characters in ISO-8859-1, ASCII or UTF-8 encoding

offset - The index of the first character to parse

length - The number of characters to parse

Returns:

the bit pattern of the parsed value, if the input is legal; otherwise, -1L.