Uses of Class java.math.MathContext (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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Uses of Class
java.math.MathContext

Packages that use MathContext
java.math	Provides classes for performing arbitrary-precision integer arithmetic (BigInteger) and arbitrary-precision decimal arithmetic (BigDecimal).

Uses of MathContext in java.math

Fields in java.math declared as MathContext

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.

Fields in java.math declared as MathContext
`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.

Methods in java.math with parameters of type MathContext

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.

Methods in java.math with parameters of type MathContext
`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.

Constructors in java.math with parameters of type MathContext

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.

Constructors in java.math with parameters of type MathContext
`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.