gnu.math

Class ExponentialFormat

java.lang.Object

java.text.Format

gnu.math.ExponentialFormat

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class ExponentialFormat
extends java.text.Format

Format a real number using a floating-point format. However, if `general' is true, and the number "fits", use a fixed-point format (like printf %g). Used for Common Lisp specs ~E and ~G; also C-style %e and %g.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.text.Format

java.text.Format.Field

Field Summary

Fields

Modifier and Type	Field and Description
int	expDigits Number of digits to show in the exponent.
char	exponentChar
boolean	exponentShowSign Display sign of exponent even when it is non-negative.
int	fracDigits Number of fractional digits to show.
boolean	general
int	intDigits Number of digits to show in the integer part of the result.
char	overflowChar
char	padChar
boolean	showPlus True if '+' should be printed for non-negative number.
char	style 'L': Common Lisp style; 'P' C/Java printf-style.
int	width

Constructor Summary

Constructors

Constructor and Description
ExponentialFormat()

Method Summary

Modifier and Type	Method and Description
java.lang.StringBuffer	format(double value, java.lang.StringBuffer sbuf, java.text.FieldPosition fpos)
java.lang.StringBuffer	format(float value, java.lang.StringBuffer sbuf, java.text.FieldPosition fpos)
java.lang.StringBuffer	format(long num, java.lang.StringBuffer sbuf, java.text.FieldPosition fpos)
java.lang.StringBuffer	format(java.lang.Object num, java.lang.StringBuffer sbuf, java.text.FieldPosition fpos)
java.lang.Number	parse(java.lang.String text, java.text.ParsePosition status)
java.lang.Object	parseObject(java.lang.String text, java.text.ParsePosition status)

Methods inherited from class java.text.Format

clone, format, formatToCharacterIterator, parseObject

Methods inherited from class java.lang.Object

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

Field Detail

fracDigits

public int fracDigits

Number of fractional digits to show. This is `d' in the CommonLisp spec.

intDigits

public int intDigits

Number of digits to show in the integer part of the result. If positive, The number of digits before the decimal point. If negative, the -intDigits zeros are emitted after the decimal point. This is `k' in the CommonLisp spec.

expDigits

public int expDigits

Number of digits to show in the exponent. Zero means unspecified - show as many as needed.

overflowChar

public char overflowChar

padChar

public char padChar

exponentChar

public char exponentChar

exponentShowSign

public boolean exponentShowSign

Display sign of exponent even when it is non-negative.

showPlus

public boolean showPlus

True if '+' should be printed for non-negative number.

general

public boolean general

style

public char style

'L': Common Lisp style; 'P' C/Java printf-style. Used for fine points of printing 'g' style.

width

public int width

Constructor Detail

ExponentialFormat

public ExponentialFormat()

Method Detail

format

public java.lang.StringBuffer format(float value,
                                     java.lang.StringBuffer sbuf,
                                     java.text.FieldPosition fpos)

format

public java.lang.StringBuffer format(double value,
                                     java.lang.StringBuffer sbuf,
                                     java.text.FieldPosition fpos)

format

public java.lang.StringBuffer format(long num,
                                     java.lang.StringBuffer sbuf,
                                     java.text.FieldPosition fpos)

format

public java.lang.StringBuffer format(java.lang.Object num,
                                     java.lang.StringBuffer sbuf,
                                     java.text.FieldPosition fpos)

Specified by:

format in class java.text.Format

parse

public java.lang.Number parse(java.lang.String text,
                              java.text.ParsePosition status)

parseObject

public java.lang.Object parseObject(java.lang.String text,
                                    java.text.ParsePosition status)

Specified by:

parseObject in class java.text.Format