MathContext Class

Reference

Definition

Namespace:: Android.Icu.Math

Assembly:: Mono.Android.dll

Important

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The MathContext immutable class encapsulates the settings understood by the operator methods of the BigDecimal class (and potentially other classes).

[Android.Runtime.Register("android/icu/math/MathContext", ApiSince=24, DoNotGenerateAcw=true)]
public sealed class MathContext : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.IO.ISerializable

[<Android.Runtime.Register("android/icu/math/MathContext", ApiSince=24, DoNotGenerateAcw=true)>]
type MathContext = class
    inherit Object
    interface ISerializable
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable

Inheritance: Object

Object
MathContext

Attributes: RegisterAttribute

Implements: IJavaObject IJavaPeerable ISerializable IDisposable

Remarks

The MathContext immutable class encapsulates the settings understood by the operator methods of the BigDecimal class (and potentially other classes). Operator methods are those that effect an operation on a number or a pair of numbers.

The settings, which are not base-dependent, comprise: <ol> <li>digits: the number of digits (precision) to be used for an operation <li>form: the form of any exponent that results from the operation <li>lostDigits: whether checking for lost digits is enabled <li>roundingMode: the algorithm to be used for rounding. </ol>

When provided, a MathContext object supplies the settings for an operation directly.

When MathContext.DEFAULT is provided for a MathContext parameter then the default settings are used (9, SCIENTIFIC, false, ROUND_HALF_UP).

In the BigDecimal class, all methods which accept a MathContext object defaults) also have a version of the method which does not accept a MathContext parameter. These versions carry out unlimited precision fixed point arithmetic (as though the settings were (0, PLAIN, false, ROUND_HALF_UP).

The instance variables are shared with default access (so they are directly accessible to the BigDecimal class), but must never be changed.

The rounding mode constants have the same names and values as the constants of the same name in java.math.BigDecimal, to maintain compatibility with earlier versions of BigDecimal.

Java documentation for android.icu.math.MathContext.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

MathContext(Int32, MathNotationForm, Boolean, RoundOptions)	Constructs a new `MathContext` with a specified precision, form, lostDigits, and roundingMode setting.
MathContext(Int32, MathNotationForm, Boolean)	Constructs a new `MathContext` with a specified precision, form, and lostDigits setting.
MathContext(Int32, MathNotationForm)	Constructs a new `MathContext` with a specified precision and form.
MathContext(Int32)	Constructs a new `MathContext` with a specified precision.

Fields

Engineering	Obsolete. Standard floating point notation (with engineering exponential format, where the power of ten is a multiple of 3).
Plain	Obsolete. Plain (fixed point) notation, without any exponent.
RoundCeiling	Obsolete. Rounding mode to round to a more positive number.
RoundDown	Obsolete. Rounding mode to round towards zero.
RoundFloor	Obsolete. Rounding mode to round to a more negative number.
RoundHalfDown	Obsolete. Rounding mode to round to nearest neighbor, where an equidistant value is rounded down.
RoundHalfEven	Obsolete. Rounding mode to round to nearest neighbor, where an equidistant value is rounded to the nearest even neighbor.
RoundHalfUp	Obsolete. Rounding mode to round to nearest neighbor, where an equidistant value is rounded up.
RoundUnnecessary	Obsolete. Rounding mode to assert that no rounding is necessary.
RoundUp	Obsolete. Rounding mode to round away from zero.
Scientific	Obsolete. Standard floating point notation (with scientific exponential format, where there is one digit before any decimal point).

Properties

Class	Returns the runtime class of this `Object`. (Inherited from Object)
Default	A `MathContext` object initialized to the default settings for general-purpose arithmetic.
Digits	Returns the digits setting.
Form	Returns the form setting.
Handle	The handle to the underlying Android instance. (Inherited from Object)
JniIdentityHashCode	(Inherited from Object)
JniPeerMembers
LostDigits	Returns the lostDigits setting.
PeerReference	(Inherited from Object)
RoundingMode	Returns the roundingMode setting.
ThresholdClass	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)
ThresholdType	This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. (Inherited from Object)

Methods

Clone()	Creates and returns a copy of this object. (Inherited from Object)
Dispose()	(Inherited from Object)
Dispose(Boolean)	(Inherited from Object)
Equals(Object)	Indicates whether some other object is "equal to" this one. (Inherited from Object)
GetHashCode()	Returns a hash code value for the object. (Inherited from Object)
JavaFinalize()	Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object)
Notify()	Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object)
NotifyAll()	Wakes up all threads that are waiting on this object's monitor. (Inherited from Object)
SetHandle(IntPtr, JniHandleOwnership)	Sets the Handle property. (Inherited from Object)
ToArray<T>()	(Inherited from Object)
ToString()	Returns a string representation of the object. (Inherited from Object)
UnregisterFromRuntime()	(Inherited from Object)
Wait()	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object)
Wait(Int64, Int32)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)
Wait(Int64)	Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object)

Explicit Interface Implementations

IJavaPeerable.Disposed()	(Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced()	(Inherited from Object)
IJavaPeerable.Finalized()	(Inherited from Object)
IJavaPeerable.JniManagedPeerState	(Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32)	(Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates)	(Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference)	(Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)	Performs an Android runtime-checked type conversion.
JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)	Gets the JNI name of the type of the instance `self`.
JavaAs<TResult>(IJavaPeerable)	Try to coerce `self` to type `TResult`, checking that the coercion is valid on the Java side.
TryJavaCast<TResult>(IJavaPeerable, TResult)	Try to coerce `self` to type `TResult`, checking that the coercion is valid on the Java side.

Applies to

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