Module ch.randelshofer.fastdoubleparser

Package ch.randelshofer.fastdoubleparser

Class JavaFloatBitsFromCharSequence

java.lang.Object

ch.randelshofer.fastdoubleparser.AbstractNumberParser

ch.randelshofer.fastdoubleparser.AbstractFloatValueParser

ch.randelshofer.fastdoubleparser.AbstractJavaFloatingPointBitsFromCharSequence

ch.randelshofer.fastdoubleparser.JavaFloatBitsFromCharSequence

final class JavaFloatBitsFromCharSequence
extends AbstractJavaFloatingPointBitsFromCharSequence

Parses a float from a CharSequence.

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
JavaFloatBitsFromCharSequence()	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(java.lang.CharSequence 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(java.lang.CharSequence 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.AbstractJavaFloatingPointBitsFromCharSequence

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 Detail

JavaFloatBitsFromCharSequence

public JavaFloatBitsFromCharSequence()

Creates a new instance.

Method Detail

nan

long nan()

Specified by:

nan in class AbstractJavaFloatingPointBitsFromCharSequence

Returns:

a NaN constant in the specialized type wrapped in a long

negativeInfinity

long negativeInfinity()

Specified by:

negativeInfinity in class AbstractJavaFloatingPointBitsFromCharSequence

Returns:

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

positiveInfinity

long positiveInfinity()

Specified by:

positiveInfinity in class AbstractJavaFloatingPointBitsFromCharSequence

Returns:

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

valueOfFloatLiteral

long valueOfFloatLiteral(java.lang.CharSequence str,
                         int startIndex,
                         int endIndex,
                         boolean isNegative,
                         long significand,
                         int exponent,
                         boolean isSignificandTruncated,
                         int exponentOfTruncatedSignificand)

Description copied from class: AbstractJavaFloatingPointBitsFromCharSequence

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

Specified by:

valueOfFloatLiteral in class AbstractJavaFloatingPointBitsFromCharSequence

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(java.lang.CharSequence str,
                       int startIndex,
                       int endIndex,
                       boolean isNegative,
                       long significand,
                       int exponent,
                       boolean isSignificandTruncated,
                       int exponentOfTruncatedSignificand)

Description copied from class: AbstractJavaFloatingPointBitsFromCharSequence

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

Specified by:

valueOfHexLiteral in class AbstractJavaFloatingPointBitsFromCharSequence

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.