Class DoubleFormat

java.lang.Object

cnuphys.lund.DoubleFormat

public class DoubleFormat
extends Object

Constructor Summary

Constructors

Constructor	Description
DoubleFormat()

Method Summary

Modifier and Type	Method	Description
static String	doubleFormat(double value, int numdec)	Format a double
static String	doubleFormat(double value, int numdec, boolean scinot)	Format a double
static String	doubleFormat(double value, int numdec, int minExponent)	Format a double, switching from fixed to scientific notation.
static void	main(String[] args)	main program for testing.

Methods inherited from class Object

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

Constructor Details

DoubleFormat

public DoubleFormat()

Method Details

doubleFormat

public static String doubleFormat(double value,
 int numdec)

Format a double

Parameters:

value - the value to format.

numdec - the number of digits right of the decimal.

doubleFormat

public static String doubleFormat(double value,
 int numdec,
 boolean scinot)

Format a double

Parameters:

value - the value to format.

numdec - the number of digits right of the decimal.

scinot - if true, use scientific notation.

doubleFormat

public static String doubleFormat(double value,
 int numdec,
 int minExponent)

Format a double, switching from fixed to scientific notation.

Example:
numdec = 6
minExponent = 2
value starts at 12345.67 and keep dividing by 10 gives
1.234567E4
1.234567E3
1.234567E2
12.345670
1.234567
0.123457
1.234567E-2
1.234567E-3
1.234567E-4
1.234567E-5
1.234567E-6
1.234567E-7


Parameters:

value - the value to format.

numdec - the number of digits right of the decimal. If the exponenent is >= n or invalid input: '<'= -n it will use sci notation.

minExponent - the minimum (absolute value) index for scientific notation.

main

public static void main(String[] args)

main program for testing.

Parameters:

args - command line arguments (ignored.)