此构造函数的运算复杂度为O (1)。

This constructor is an o (1) operation.

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HotSpot利用这些指令显著加速了三角函数的运算。

HotSpot takes advantage of these instructions to speed up trigonometry operations dramatically.

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在许多数字信号处理中，一般都会有实时性的要求，在满足计算精度条件下，函数的运算速度非常重要。

In many digital signal processing, in generally, real-time must be asked for. The operation speed of function is very important under meeting the condition of operation precision.

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