★ wanayoo — archive 1999 http://sourceware.cygnus.com/kawa/api/gnu/math/RealNum.html

Nouvelle recherche | Portail wanayoo

gnu.math
Class RealNum

java.lang.Object
  |
  +--java.lang.Number
        |
        +--gnu.math.Numeric
              |
              +--gnu.math.Quantity
                    |
                    +--gnu.math.Complex
                          |
                          +--gnu.math.RealNum

Direct Known Subclasses:

DFloNum, RatNum

public abstract class RealNum

extends Complex

See Also:

Serialized Form

Fields inherited from class gnu.math.Numeric

CEILING, FLOOR, ROUND, TRUNCATE

Constructor Summary

RealNum()

Method Summary

Numeric	abs()
abstract Numeric	add(java.lang.Object obj, int k)
static RealNum	add(RealNum x, RealNum y, int k)
RealNum	angle()
abstract Numeric	div(java.lang.Object obj)
static RealNum	div(RealNum x, RealNum y)
Complex	exp()
RealNum	im()
abstract boolean	isNegative()
boolean	isZero()
Complex	log()
RealNum	max(RealNum x)
RealNum	min(RealNum x)
abstract Numeric	mul(java.lang.Object obj)
static RealNum	mul(RealNum x, RealNum y)
RealNum	re()
RealNum	rneg()
abstract int	sign() Return 1 if >0; 0 if ==0; -1 if <0; -2 if NaN.
Complex	sin()
Complex	sqrt()
RatNum	toExact() Convert to an exact number.
static IntNum	toExactInt(double value) Converts an integral double (e.g.
static IntNum	toExactInt(double value, int rounding_mode) Converts real to an exact integer, with specified rounding mode.
IntNum	toExactInt(int rounding_mode) Converts to an exact integer, with specified rounding mode.
static double	toInt(double d, int rounding_mode) Converts a real to an integer, according to a specified rounding mode.
RealNum	toInt(int rounding_mode) Converts a real to an integer, according to a specified rounding mode.

Methods inherited from class gnu.math.Complex

add, addReversed, compare, compare, div, divReversed, doubleImagValue, doubleRealValue, doubleValue, equals, equals, imMinusOne, imOne, isExact, longValue, make, make, mul, mulReversed, neg, neg, number, polar, polar, power, toString

Methods inherited from class gnu.math.Quantity

add, compare, compareReversed, dimensions, div, imValue, make, make, make, mul, reValue, unit

Methods inherited from class gnu.math.Numeric

add, div_inv, floatValue, geq, grt, intValue, mul_ident, power, sub, toString

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

RealNum

public RealNum()

Method Detail

re

public final RealNum re()

Overrides:

re in class Quantity

im

public final RealNum im()

Overrides:

im in class Quantity

isNegative

public abstract boolean isNegative()

sign

public abstract int sign()

Return 1 if >0; 0 if ==0; -1 if <0; -2 if NaN.

max

public RealNum max(RealNum x)

min

public RealNum min(RealNum x)

add

public static RealNum add(RealNum x,
                          RealNum y,
                          int k)

mul

public static RealNum mul(RealNum x,
                          RealNum y)

div

public static RealNum div(RealNum x,
                          RealNum y)

add

public abstract Numeric add(java.lang.Object obj,
                            int k)

Overrides:

add in class Complex

mul

public abstract Numeric mul(java.lang.Object obj)

Overrides:

mul in class Complex

div

public abstract Numeric div(java.lang.Object obj)

Overrides:

div in class Complex

angle

public RealNum angle()

Overrides:

angle in class Complex

abs

public Numeric abs()

Overrides:

abs in class Complex

rneg

public final RealNum rneg()

isZero

public boolean isZero()

Overrides:

isZero in class Complex

toExact

public RatNum toExact()

Convert to an exact number. Implements the Scheme inexact->exact (for real numbers).

toInt

public static double toInt(double d,
                           int rounding_mode)

Converts a real to an integer, according to a specified rounding mode. Note an inexact argument gives an inexact result, following Scheme. See also RatNum.toExactInt.

toInt

public RealNum toInt(int rounding_mode)

Converts a real to an integer, according to a specified rounding mode. Note an inexact argument gives an inexact result, following Scheme. See also toExactInt.

toExactInt

public IntNum toExactInt(int rounding_mode)

Converts to an exact integer, with specified rounding mode.

toExactInt

public static IntNum toExactInt(double value,
                                int rounding_mode)

Converts real to an exact integer, with specified rounding mode.

toExactInt

public static IntNum toExactInt(double value)

Converts an integral double (e.g. toInt result) to an IntNum.

exp

public Complex exp()

Overrides:

exp in class Complex

log

public Complex log()

Overrides:

log in class Complex

sin

public final Complex sin()

sqrt

public final Complex sqrt()

Overrides:

sqrt in class Complex