com.numericalmethod.suanshu.number
Class ScientificNotation

java.lang.Object
  java.lang.Number
      com.numericalmethod.suanshu.number.ScientificNotation

All Implemented Interfaces:

java.io.Serializable

public class ScientificNotation
extends java.lang.Number

Scientific notation expresses a number in this form

x = a * 10b

a is called significand or mantissa, and 1 ≤ |a| < 10.

b is called the exponent and is an integer.

Strictly speaking, 0 cannot be represented in this notation. In this implementation, however, we will express it as x = 0 * 100

See Also:

Wikipedia: Scientific notation, Serialized Form

Field Summary

int	exponent the exponent
java.math.BigDecimal	significand the significand or mantissa

Constructor Summary

ScientificNotation(java.math.BigDecimal x)
Construct a ScientificNotation from a BigDecimal.

ScientificNotation(java.math.BigDecimal significand, int exponent)
Construct a ScientificNotation for x = a * 10b.

ScientificNotation(java.math.BigInteger x)
Construct a ScientificNotation from a BigInteger.

ScientificNotation(double x)
Construct a ScientificNotation from a double.

ScientificNotation(double significand, int exponent)
Construct a ScientificNotation for x = a * 10b.

ScientificNotation(long x)
Construct a ScientificNotation from a long.

Method Summary

double	doubleValue()
float	floatValue()
int	intValue()
long	longValue()
java.math.BigDecimal	value() Get the value of the specified number as a BigDecimal.

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Field Detail

significand

public final java.math.BigDecimal significand

the significand or mantissa

exponent

public final int exponent

the exponent

Constructor Detail

ScientificNotation

public ScientificNotation(double significand,
                          int exponent)

Construct a ScientificNotation for x = a * 10b.

Parameters:

significand - the significand

exponent - the exponent

ScientificNotation

public ScientificNotation(java.math.BigDecimal significand,
                          int exponent)

Construct a ScientificNotation for x = a * 10b.

Parameters:

significand - the significand

exponent - the exponent

ScientificNotation

public ScientificNotation(java.math.BigDecimal x)

Construct a ScientificNotation from a BigDecimal.

Parameters:

x - a BigDecimal number

ScientificNotation

public ScientificNotation(java.math.BigInteger x)

Construct a ScientificNotation from a BigInteger.

Parameters:

x - a BigInteger integer

ScientificNotation

public ScientificNotation(long x)

Construct a ScientificNotation from a long.

Parameters:

x - a long integer

ScientificNotation

public ScientificNotation(double x)

Construct a ScientificNotation from a double.

Parameters:

x - a double number

Method Detail

intValue

public int intValue()

Specified by:

intValue in class java.lang.Number

longValue

public long longValue()

Specified by:

longValue in class java.lang.Number

floatValue

public float floatValue()

Specified by:

floatValue in class java.lang.Number

doubleValue

public double doubleValue()

Specified by:

doubleValue in class java.lang.Number

value

public java.math.BigDecimal value()

Get the value of the specified number as a BigDecimal. There is no rounding.

Returns:

the numeric value represented by this object after conversion to type BigDecimal.