com.oracle.truffle.js.runtime.doubleconv

Class DoubleConversion

java.lang.Object

com.oracle.truffle.js.runtime.doubleconv.DoubleConversion

public final class DoubleConversion
extends Object

This class provides the public API for the double conversion package. Using double-conversion version 3.1.5.

Method Summary

Modifier and Type	Method and Description
static void	bignumDtoa(double v, DtoaMode mode, int digits, DtoaBuffer buffer) Converts a double number to a string representation using the BignumDtoa algorithm and the specified conversion mode and number of digits.
static boolean	fastDtoaCounted(double v, int precision, DtoaBuffer buffer) Converts a double number to a string representation with the given number of digits using the FastDtoa algorithm.
static boolean	fastDtoaShortest(double v, DtoaBuffer buffer) Converts a double number to its shortest string representation using the FastDtoa algorithm.
static boolean	fixedDtoa(double v, int digits, DtoaBuffer buffer) Converts a double number to a string representation with a fixed number of digits after the decimal point using the FixedDtoa algorithm.
static String	toExponential(double value, int requestedDigits) Computes a representation in exponential format with requestedDigits after the decimal point.
static String	toExponential(double value, int requestedDigits, boolean uniqueZero) Computes a representation in exponential format with requestedDigits after the decimal point.
static String	toFixed(double value, int requestedDigits) Converts a double number to a string representation with a fixed number of digits after the decimal point.
static String	toPrecision(double value, int precision) Converts a double number to a string representation with a fixed number of digits.
static String	toShortest(double value) Converts a double number to its shortest string representation.

Methods inherited from class java.lang.Object

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

Method Detail

toShortest

public static String toShortest(double value)

Converts a double number to its shortest string representation.

Parameters:

value - number to convert

Returns:

formatted number

toFixed

public static String toFixed(double value,
                             int requestedDigits)

Converts a double number to a string representation with a fixed number of digits after the decimal point.

Parameters:

value - number to convert.

requestedDigits - number of digits after decimal point

Returns:

formatted number

toPrecision

public static String toPrecision(double value,
                                 int precision)

Converts a double number to a string representation with a fixed number of digits.

Parameters:

value - number to convert

precision - number of digits to create

Returns:

formatted number

bignumDtoa

public static void bignumDtoa(double v,
                              DtoaMode mode,
                              int digits,
                              DtoaBuffer buffer)

Converts a double number to a string representation using the BignumDtoa algorithm and the specified conversion mode and number of digits.

Parameters:

v - number to convert

mode - conversion mode

digits - number of digits

buffer - buffer to use

fastDtoaShortest

public static boolean fastDtoaShortest(double v,
                                       DtoaBuffer buffer)

Converts a double number to its shortest string representation using the FastDtoa algorithm.

Parameters:

v - number to convert

buffer - buffer to use

Returns:

true if conversion succeeded

fastDtoaCounted

public static boolean fastDtoaCounted(double v,
                                      int precision,
                                      DtoaBuffer buffer)

Converts a double number to a string representation with the given number of digits using the FastDtoa algorithm.

Parameters:

v - number to convert

precision - number of digits to generate

buffer - buffer to use

Returns:

true if conversion succeeded

fixedDtoa

public static boolean fixedDtoa(double v,
                                int digits,
                                DtoaBuffer buffer)

Converts a double number to a string representation with a fixed number of digits after the decimal point using the FixedDtoa algorithm.

Parameters:

v - number to convert.

digits - number of digits after the decimal point

buffer - buffer to use

Returns:

true if conversion succeeded

toExponential

public static String toExponential(double value,
                                   int requestedDigits)

Computes a representation in exponential format with requestedDigits after the decimal point. The last emitted digit is rounded. If requestedDigits equals -1, then the shortest exponential representation is computed.

Parameters:

value - number to convert

requestedDigits - number of digits after the decimal point

Returns:

true if conversion succeeded

toExponential

public static String toExponential(double value,
                                   int requestedDigits,
                                   boolean uniqueZero)

Computes a representation in exponential format with requestedDigits after the decimal point. The last emitted digit is rounded. If requestedDigits equals -1, then the shortest exponential representation is computed.

Parameters:

value - number to convert

requestedDigits - number of digits after the decimal point

uniqueZero - "-0.0" is converted to "0.0".

Returns:

true if conversion succeeded