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/**
 * References:
 * 
 *     This class has been derived from "FastDoubleParser".
 *     Copyright (c) Werner Randelshofer. Apache 2.0 License.
 *         github.com.
 * 
 */

/**
 * Provides parsers that parse a {@code FloatingPointLiteral} from a
 * {@link java.lang.CharSequence}, {@code char} array, or {@code byte} array
 * ({@code str});.
 * 
 * Leading and trailing whitespace characters in {@code str} are ignored.
 * Whitespace is removed as if by the {@link java.lang.String#trim()} method;
 * that is, characters in the range [U+0000,U+0020].
 * 

 * The rest of {@code str} should constitute a  {@code FloatingPointLiteral} as described
 * by the lexical syntax rules shown below:
 * 

 * 
 * FloatingPointLiteral:
 * [Sign] {@code NaN}
 * [Sign] {@code Infinity}
 * [Sign] DecimalFloatingPointLiteral
 * [Sign] HexFloatingPointLiteral
 * SignedInteger
 * 
 *
 * 
 * HexFloatingPointLiteral:
 * 
HexSignificand BinaryExponent [FloatTypeSuffix]
 * 
 *
 * 
 * HexSignificand:
 * 
HexNumeral
 * 
HexNumeral {@code .}
 * 
{@code 0x} [HexDigits] {@code .} HexDigits
 * 
{@code 0X} [HexDigits] {@code .} HexDigits
 * 
 *
 * 
 * BinaryExponent:
 * 
BinaryExponentIndicator SignedInteger
 * 
 *
 * 
 * BinaryExponentIndicator:
 * 
{@code p}
 * 
{@code P}
 * 
 *
 * 
 * DecimalFloatingPointLiteral:
 * 
DecSignificand [DecExponent] [FloatTypeSuffix]
 * 
 *
 * 
 * DecSignificand:
 * 
Digits {@code .} [Digits]
 * 
{@code .} Digits
 * 
Digits
 * 
 *
 * 
 * DecExponent:
 * 
ExponentIndicator SignedInteger
 * 
 *
 * 
 * ExponentIndicator:
 * 
(one of)
 * 
e E
 * 
 *
 * 
 * SignedInteger:
 * 
[Sign] Digits
 * 
 *
 * 
 * Sign:
 * 
(one of)
 * 
+ -
 * 
 *
 * 
 * Digits:
 * 
Digit {Digit}
 * 
 *
 * 
 * HexNumeral:
 * 
{@code 0} {@code x} HexDigits
 * 
{@code 0} {@code X} HexDigits
 * 
 *
 * 
 * HexDigits:
 * 
HexDigit {HexDigit}
 * 
 *
 * 
 * HexDigit:
 * 
(one of)
 * 
{@code 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)
 * 
{@code f F d D}
 * 
 * 
 * 
 * References:
 * 

 *     The Java® Language Specification, Java SE 18 Edition, Chapter 3. Lexical Structure, 3.10.2. Floating-Point Literals 
 *     docs.oracle.com
 * 
 */
package com.fasterxml.jackson.core.io.doubleparser;