Module ch.randelshofer.fastdoubleparser

Package ch.randelshofer.fastdoubleparser

Class JavaFloatBitsFromByteArray

java.lang.Object

ch.randelshofer.fastdoubleparser.AbstractNumberParser

ch.randelshofer.fastdoubleparser.AbstractFloatValueParser

ch.randelshofer.fastdoubleparser.AbstractJavaFloatingPointBitsFromByteArray

ch.randelshofer.fastdoubleparser.JavaFloatBitsFromByteArray

final class JavaFloatBitsFromByteArray
extends AbstractJavaFloatingPointBitsFromByteArray

Parses a float from a byte array.

Field Summary

Fields inherited from class ch.randelshofer.fastdoubleparser.AbstractFloatValueParser

MAX_EXPONENT_NUMBER, MAX_INPUT_LENGTH, MINIMAL_NINETEEN_DIGIT_INTEGER

Fields inherited from class ch.randelshofer.fastdoubleparser.AbstractNumberParser

CHAR_TO_HEX_MAP, DECIMAL_POINT_CLASS, ILLEGAL_OFFSET_OR_ILLEGAL_LENGTH, OTHER_CLASS, SYNTAX_ERROR, SYNTAX_ERROR_BITS, VALUE_EXCEEDS_LIMITS

Constructor Summary

Constructors

Constructor	Description
JavaFloatBitsFromByteArray()	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
(package private) long	nan()
(package private) long	negativeInfinity()
(package private) long	positiveInfinity()
(package private) long	valueOfFloatLiteral(byte[] str, int startIndex, int endIndex, boolean isNegative, long significand, int exponent, boolean isSignificandTruncated, int exponentOfTruncatedSignificand)	Computes a float value from the given components of a decimal float literal.
(package private) long	valueOfHexLiteral(byte[] str, int startIndex, int endIndex, boolean isNegative, long significand, int exponent, boolean isSignificandTruncated, int exponentOfTruncatedSignificand)	Computes a float value from the given components of a hexadecimal float literal.

Methods inherited from class ch.randelshofer.fastdoubleparser.AbstractJavaFloatingPointBitsFromByteArray

parseFloatingPointLiteral

Methods inherited from class ch.randelshofer.fastdoubleparser.AbstractNumberParser

charAt, charAt, charAt, checkBounds, checkBounds, lookupHex, lookupHex

Methods inherited from class java.lang.Object

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

Constructor Details

JavaFloatBitsFromByteArray

public JavaFloatBitsFromByteArray()

Creates a new instance.

Method Details

nan

long nan()

Specified by:

nan in class AbstractJavaFloatingPointBitsFromByteArray

Returns:

a NaN constant in the specialized type wrapped in a long

negativeInfinity

long negativeInfinity()

Specified by:

negativeInfinity in class AbstractJavaFloatingPointBitsFromByteArray

Returns:

a negative infinity constant in the specialized type wrapped in a long

positiveInfinity

long positiveInfinity()

Specified by:

positiveInfinity in class AbstractJavaFloatingPointBitsFromByteArray

Returns:

a positive infinity constant in the specialized type wrapped in a long

valueOfFloatLiteral

long valueOfFloatLiteral(byte[] str,
 int startIndex,
 int endIndex,
 boolean isNegative,
 long significand,
 int exponent,
 boolean isSignificandTruncated,
 int exponentOfTruncatedSignificand)

Description copied from class: AbstractJavaFloatingPointBitsFromByteArray

Computes a float value from the given components of a decimal float literal.

Specified by:

valueOfFloatLiteral in class AbstractJavaFloatingPointBitsFromByteArray

Parameters:

str - the string that contains the float literal (and maybe more)

startIndex - the start index (inclusive) of the float literal inside the string

endIndex - the end index (exclusive) of the float literal inside the string

isNegative - whether the float value is negative

significand - the significand of the float value (can be truncated)

exponent - the exponent of the float value

isSignificandTruncated - whether the significand is truncated

exponentOfTruncatedSignificand - the exponent value of the truncated significand

Returns:

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

valueOfHexLiteral

long valueOfHexLiteral(byte[] str,
 int startIndex,
 int endIndex,
 boolean isNegative,
 long significand,
 int exponent,
 boolean isSignificandTruncated,
 int exponentOfTruncatedSignificand)

Description copied from class: AbstractJavaFloatingPointBitsFromByteArray

Computes a float value from the given components of a hexadecimal float literal.

Specified by:

valueOfHexLiteral in class AbstractJavaFloatingPointBitsFromByteArray

Parameters:

str - the string that contains the float literal (and maybe more)

startIndex - the start index (inclusive) of the float literal inside the string

endIndex - the end index (exclusive) of the float literal inside the string

isNegative - whether the float value is negative

significand - the significand of the float value (can be truncated)

exponent - the exponent of the float value

isSignificandTruncated - whether the significand is truncated

exponentOfTruncatedSignificand - the exponent value of the truncated significand

Returns:

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