org.decimal4j.arithmetic

Class UnsignedDecimal9i36f

java.lang.Object

org.decimal4j.arithmetic.UnsignedDecimal9i36f

final class UnsignedDecimal9i36f
extends Object

Helper class for an unsigned decimal value with 9 integral digits and 38 decimal fraction digits used internally by Pow to calculate decimal powers.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static ThreadLocal<UnsignedDecimal9i36f>	THREAD_LOCAL_1 Thread local for factor 1
(package private) static ThreadLocal<UnsignedDecimal9i36f>	THREAD_LOCAL_2 Thread local for accumulator

Method Summary

Modifier and Type	Method and Description
long	getDecimal(int sgn, DecimalArithmetic arith, DecimalRounding rounding) Returns the unscaled Decimal result resulting from exponentiation with a non-negative exponent.
long	getInverted(int sgn, DecimalArithmetic arith, DecimalRounding rounding, DecimalRounding powRounding) Returns the inverted result resulting from exponentiation with a negative exponent.
int	getPow10() Returns the current power-ten exponent.
UnsignedDecimal9i36f	init(long ival, long fval, ScaleMetrics scaleMetrics) Assigns the given integer and fraction component to this unsigned 9x36 decimal and returns it.
UnsignedDecimal9i36f	init(UnsignedDecimal9i36f copy) Assigns the value one to this unsigned 9x36 decimal and returns it.
UnsignedDecimal9i36f	initOne() Assigns the value one to this unsigned 9x36 decimal and returns it.
void	multiply(int sgn, UnsignedDecimal9i36f factor, DecimalRounding rounding) Multiplies this unsigned 9x36 decimal value with another one.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

THREAD_LOCAL_1

static final ThreadLocal<UnsignedDecimal9i36f> THREAD_LOCAL_1

Thread local for factor 1

THREAD_LOCAL_2

static final ThreadLocal<UnsignedDecimal9i36f> THREAD_LOCAL_2

Thread local for accumulator

Method Detail

initOne

public final UnsignedDecimal9i36f initOne()

Assigns the value one to this unsigned 9x36 decimal and returns it.

Returns:

this

init

public final UnsignedDecimal9i36f init(UnsignedDecimal9i36f copy)

Assigns the value one to this unsigned 9x36 decimal and returns it.

Parameters:

copy - the value to copy

Returns:

this

init

public final UnsignedDecimal9i36f init(long ival,
                                       long fval,
                                       ScaleMetrics scaleMetrics)

Assigns the given integer and fraction component to this unsigned 9x36 decimal and returns it.

Parameters:

ival - the integer part of the value to assign

fval - the fractional part of the value to assign

scaleMetrics - the scale metrics associated with the value

Returns:

this

getPow10

public final int getPow10()

Returns the current power-ten exponent.

Returns:

the base-10 exponent of this value

multiply

public final void multiply(int sgn,
                           UnsignedDecimal9i36f factor,
                           DecimalRounding rounding)

Multiplies this unsigned 9x36 decimal value with another one.

Parameters:

sgn - the sign of the final result

factor - the factor to be multiplied with

rounding - the rounding to apply

getInverted

public final long getInverted(int sgn,
                              DecimalArithmetic arith,
                              DecimalRounding rounding,
                              DecimalRounding powRounding)

Returns the inverted result resulting from exponentiation with a negative exponent. The result is best-effort accurate.

Parameters:

sgn - the sign of the final result

arith - the arithmetic of the base value

rounding - the rounding to apply

powRounding - reciprocal rounding if exponent is negative and rounding otherwise

Returns:

round(1 / this)

getDecimal

public final long getDecimal(int sgn,
                             DecimalArithmetic arith,
                             DecimalRounding rounding)

Returns the unscaled Decimal result resulting from exponentiation with a non-negative exponent. The result is accurate up to 1 ULP of the Decimal.

Parameters:

sgn - the sign of the final result

arith - the arithmetic of the base value

rounding - the rounding to apply

Returns:

round(this)

toString

public final String toString()

Overrides:

toString in class Object