Package com.fasterxml.jackson.core.io.doubleparser

Provides parsers that parse a FloatingPointLiteral from a CharSequence, char array, or byte array (str);.

See: Description

Class Summary

Class	Description
FastDoubleParser	Provides static method for parsing a double from a CharSequence, char array or byte array.
FastFloatParser	Provides static method for parsing a float from a CharSequence, char array or byte array.

Package com.fasterxml.jackson.core.io.doubleparser Description

Provides parsers that parse a FloatingPointLiteral from a CharSequence, char array, or byte array (str);.

Leading and trailing whitespace characters in str are ignored. Whitespace is removed as if by the String.trim() method; that is, characters in the range [U+0000,U+0020].

The rest of str should constitute a FloatingPointLiteral as described by the lexical syntax rules shown below:

FloatingPointLiteral:

[Sign] NaN

[Sign] Infinity

[Sign] DecimalFloatingPointLiteral

[Sign] HexFloatingPointLiteral

SignedInteger

HexFloatingPointLiteral:

HexSignificand BinaryExponent [FloatTypeSuffix]

HexSignificand:

HexNumeral

HexNumeral .

0x [HexDigits] . HexDigits

0X [HexDigits] . HexDigits

BinaryExponent:

BinaryExponentIndicator SignedInteger

BinaryExponentIndicator:

p

P

DecimalFloatingPointLiteral:

DecSignificand [DecExponent] [FloatTypeSuffix]

DecSignificand:

Digits . [Digits]

. Digits

Digits

DecExponent:

ExponentIndicator SignedInteger

ExponentIndicator:

(one of)

e E

SignedInteger:

[Sign] Digits

Sign:

(one of)

+ -

Digits:

Digit {Digit}

HexNumeral:

0 x HexDigits

0 X HexDigits

HexDigits:

HexDigit {HexDigit}

HexDigit:

(one of)

0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F

FloatTypeSuffix:

(one of)

f F d D

References:

The Java® Language Specification, Java SE 18 Edition, Chapter 3. Lexical Structure, 3.10.2. Floating-Point Literals

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