Package | Description |
---|---|
java.math |
Provides classes for performing arbitrary-precision integer
arithmetic (
BigInteger ) and arbitrary-precision decimal
arithmetic (BigDecimal ). |
Modifier and Type | Field and Description |
---|---|
static MathContext |
MathContext.DECIMAL128
A
MathContext object with a precision setting
matching the IEEE 754R Decimal128 format, 34 digits, and a
rounding mode of HALF_EVEN , the
IEEE 754R default. |
static MathContext |
MathContext.DECIMAL32
A
MathContext object with a precision setting
matching the IEEE 754R Decimal32 format, 7 digits, and a
rounding mode of HALF_EVEN , the
IEEE 754R default. |
static MathContext |
MathContext.DECIMAL64
A
MathContext object with a precision setting
matching the IEEE 754R Decimal64 format, 16 digits, and a
rounding mode of HALF_EVEN , the
IEEE 754R default. |
static MathContext |
MathContext.UNLIMITED
A
MathContext object whose settings have the values
required for unlimited precision arithmetic. |
Modifier and Type | Method and Description |
---|---|
BigDecimal |
BigDecimal.abs(MathContext mc)
Returns a
BigDecimal whose value is the absolute value
of this BigDecimal , with rounding according to the
context settings. |
BigDecimal |
BigDecimal.add(BigDecimal augend,
MathContext mc)
Returns a
BigDecimal whose value is (this + augend) ,
with rounding according to the context settings. |
BigDecimal |
BigDecimal.divide(BigDecimal divisor,
MathContext mc)
Returns a
BigDecimal whose value is (this /
divisor) , with rounding according to the context settings. |
BigDecimal[] |
BigDecimal.divideAndRemainder(BigDecimal divisor,
MathContext mc)
Returns a two-element
BigDecimal array containing the
result of divideToIntegralValue followed by the result of
remainder on the two operands calculated with rounding
according to the context settings. |
BigDecimal |
BigDecimal.divideToIntegralValue(BigDecimal divisor,
MathContext mc)
Returns a
BigDecimal whose value is the integer part
of (this / divisor) . |
BigDecimal |
BigDecimal.multiply(BigDecimal multiplicand,
MathContext mc)
Returns a
BigDecimal whose value is (this ×
multiplicand), with rounding according to the context settings. |
BigDecimal |
BigDecimal.negate(MathContext mc)
Returns a
BigDecimal whose value is (-this) ,
with rounding according to the context settings. |
BigDecimal |
BigDecimal.plus(MathContext mc)
Returns a
BigDecimal whose value is (+this) ,
with rounding according to the context settings. |
BigDecimal |
BigDecimal.pow(int n,
MathContext mc)
Returns a
BigDecimal whose value is
(thisn). |
BigDecimal |
BigDecimal.remainder(BigDecimal divisor,
MathContext mc)
Returns a
BigDecimal whose value is (this %
divisor) , with rounding according to the context settings. |
BigDecimal |
BigDecimal.round(MathContext mc)
Returns a
BigDecimal rounded according to the
MathContext settings. |
BigDecimal |
BigDecimal.subtract(BigDecimal subtrahend,
MathContext mc)
Returns a
BigDecimal whose value is (this - subtrahend) ,
with rounding according to the context settings. |
Constructor and Description |
---|
BigDecimal(BigInteger unscaledVal,
int scale,
MathContext mc)
Translates a
BigInteger unscaled value and an
int scale into a BigDecimal , with rounding
according to the context settings. |
BigDecimal(BigInteger val,
MathContext mc)
Translates a
BigInteger into a BigDecimal
rounding according to the context settings. |
BigDecimal(char[] in,
int offset,
int len,
MathContext mc)
Translates a character array representation of a
BigDecimal into a BigDecimal , accepting the
same sequence of characters as the BigDecimal.BigDecimal(String)
constructor, while allowing a sub-array to be specified and
with rounding according to the context settings. |
BigDecimal(char[] in,
MathContext mc)
Translates a character array representation of a
BigDecimal into a BigDecimal , accepting the
same sequence of characters as the BigDecimal.BigDecimal(String)
constructor and with rounding according to the context
settings. |
BigDecimal(double val,
MathContext mc)
Translates a
double into a BigDecimal , with
rounding according to the context settings. |
BigDecimal(int val,
MathContext mc)
Translates an
int into a BigDecimal , with
rounding according to the context settings. |
BigDecimal(long val,
MathContext mc)
Translates a
long into a BigDecimal , with
rounding according to the context settings. |
BigDecimal(String val,
MathContext mc)
Translates the string representation of a
BigDecimal
into a BigDecimal , accepting the same strings as the
BigDecimal.BigDecimal(String) constructor, with rounding
according to the context settings. |