# System.Numerics 命名空間

## 類別

 提供內建位元運算作業的公用程式方法。Provides utility methods for intrinsic bit-twiddling operations. 如果在基礎平台上可用，則這些方法會使用硬體內建；否則會使用最佳化的軟體後援。The methods use hardware intrinsics when available on the underlying platform; otherwise, they use optimized software fallbacks. 提供建立、操作、結合以及轉換泛型向量之靜態簡便方法的集合。Provides a collection of static convenience methods for creating, manipulating, combining, and converting generic vectors.

## 結構

 表示任意大、帶正負號的整數。Represents an arbitrarily large signed integer. 表示複數。Represents a complex number. 表示一個 3x2 矩陣。Represents a 3x2 matrix. 表示一個 4x4 矩陣。Represents a 4x4 matrix. 表示立體空間中的平面。Represents a plane in three-dimensional space. 表示用來編碼三維實體旋轉的向量。Represents a vector that is used to encode three-dimensional physical rotations. 表示指定數值類型的單一向量，其適用於低層級的平行演算法最佳化。Represents a single vector of a specified numeric type that is suitable for low-level optimization of parallel algorithms. 代表具有兩個單精確度浮點值的向量。Represents a vector with two single-precision floating-point values. 代表具有三個單精確度浮點值的向量。Represents a vector with three single-precision floating-point values. 代表具有四個單精確度浮點值的向量。Represents a vector with four single-precision floating-point values.

## 備註

• BigInteger結構，這是支援任意大整數的 nonprimitive 整數類型。The BigInteger structure, which is a nonprimitive integral type that supports arbitrarily large integers. 整數基本類型（例如 Byte 或） Int32 包含 `MinValue``MaxValue` 屬性，可定義該資料類型所支援的下限和上限。An integral primitive such as Byte or Int32 includes a `MinValue` and a `MaxValue` property, which define the lower bound and upper bound supported by that data type. 相反 BigInteger 地，結構沒有下限或上限，而且可以包含任何整數的值。In contrast, the BigInteger structure has no lower or upper bound, and can contain the value of any integer.

• Complex表示複數的結構。The Complex structure, which represents a complex number. 複數是 a a + b i 的數位，其中 a 是實數部分，而 b 是虛數部分。A complex number is a number in the form a + b i, where a is the real part, and b is the imaginary part.

• 啟用 SIMD 的向量類型，其中包括 Vector2Vector3Vector4Matrix3x2Matrix4x4PlaneQuaternionThe SIMD-enabled vector types, which include Vector2, Vector3, Vector4, Matrix3x2, Matrix4x4, Plane, and Quaternion.