Module ch.randelshofer.fastdoubleparser

Package ch.randelshofer.fastdoubleparser

Class AbstractFloatValueParser

java.lang.Object

ch.randelshofer.fastdoubleparser.AbstractNumberParser

ch.randelshofer.fastdoubleparser.AbstractFloatValueParser

Direct Known Subclasses:

AbstractConfigurableFloatingPointBitsFromByteArrayAscii, AbstractConfigurableFloatingPointBitsFromByteArrayUtf8, AbstractConfigurableFloatingPointBitsFromCharArray, AbstractConfigurableFloatingPointBitsFromCharSequence, AbstractJavaFloatingPointBitsFromByteArray, AbstractJavaFloatingPointBitsFromCharArray, AbstractJavaFloatingPointBitsFromCharSequence, AbstractJsonFloatingPointBitsFromByteArray, AbstractJsonFloatingPointBitsFromCharArray, AbstractJsonFloatingPointBitsFromCharSequence

abstract class AbstractFloatValueParser
extends AbstractNumberParser

Abstract base class for parsers that parse a FloatingPointLiteral from a character sequence (str).

This is a C++ to Java port of Daniel Lemire's fast_double_parser.

References:

Daniel Lemire, fast_float number parsing library: 4x faster than strtod. MIT License.

github.com

Daniel Lemire, Number Parsing at a Gigabyte per Second, Software: Practice and Experience 51 (8), 2021. arXiv.2101.11408v3 [cs.DS] 24 Feb 2021

arxiv.org

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final int	MAX_EXPONENT_NUMBER	The decimal exponent of a double has a range of -324 to +308.
static final int	MAX_INPUT_LENGTH	This is the maximal input length that a Java array can have.
(package private) static final long	MINIMAL_NINETEEN_DIGIT_INTEGER	This is the smallest non-negative number that has 19 decimal digits.

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
AbstractFloatValueParser()

Method Summary

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

Field Details

MAX_INPUT_LENGTH

public static final int MAX_INPUT_LENGTH

This is the maximal input length that a Java array can have.

See Also:

• Constant Field Values

MINIMAL_NINETEEN_DIGIT_INTEGER

static final long MINIMAL_NINETEEN_DIGIT_INTEGER

This is the smallest non-negative number that has 19 decimal digits.

See Also:

• Constant Field Values

MAX_EXPONENT_NUMBER

static final int MAX_EXPONENT_NUMBER

The decimal exponent of a double has a range of -324 to +308. The hexadecimal exponent of a double has a range of -1022 to +1023.

See Also:

• Constant Field Values

Constructor Details

AbstractFloatValueParser

AbstractFloatValueParser()