gnu.math

Class RatNum

public abstract class RatNum extends RealNum

The abstract class of rational numbers.

Method Summary
static RatNum	add(RatNum x, RatNum y, int k)
static int	compare(RatNum x, RatNum y)
abstract IntNum	denominator()
static RatNum	divide(RatNum x, RatNum y)
static boolean	equals(RatNum x, RatNum y)
boolean	equals(Object obj)
static RatNum	infinity(int sign) Return exact "rational" infinity.
boolean	isExact()
boolean	isZero()
static RatNum	make(IntNum num, IntNum den)
abstract IntNum	numerator()
Numeric	power(IntNum y)
static RealNum	rationalize(RealNum x, RealNum y) Calcaulte the simplest rational between two reals.
static RatNum	times(RatNum x, RatNum y)
RatNum	toExact()
IntNum	toExactInt(int rounding_mode)
RealNum	toInt(int rounding_mode)

Method Detail

add

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

compare

public static int compare(RatNum x, RatNum y)

denominator

public abstract IntNum denominator()

divide

public static RatNum divide(RatNum x, RatNum y)

equals

public static boolean equals(RatNum x, RatNum y)

equals

public boolean equals(Object obj)

infinity

public static RatNum infinity(int sign)

Return exact "rational" infinity.

Parameters: sign either 1 or -1 for positive or negative infinity

isExact

public boolean isExact()

isZero

public boolean isZero()

make

public static RatNum make(IntNum num, IntNum den)

numerator

public abstract IntNum numerator()

power

public Numeric power(IntNum y)

rationalize

public static RealNum rationalize(RealNum x, RealNum y)

Calcaulte the simplest rational between two reals.

times

public static RatNum times(RatNum x, RatNum y)

toExact

public final RatNum toExact()

toExactInt

public IntNum toExactInt(int rounding_mode)

toInt

public RealNum toInt(int rounding_mode)