浮点运算器 Floating-point unit
（重定向自Math coprocessor）
浮点运算器（floating point unit，缩写FPU）是运行浮点运算的结构。一般是用电路来实现，应用在计算机芯片中。是整数运算器之后的一大发展，因为在浮点运算器发明之前，计算机中的浮点运算是都是用整数运算来模拟的，效率十分不良。
Math coprocessor
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Floating-point unit 浮点运算器
（重定向自Math coprocessor）
A floating-point unit (FPU, colloquially a math coprocessor) is a part of a computer system specially designed to carry out operations on floating point numbers. Typical operations are addition, subtraction, multiplication, division, square root, and bitshifting. Some systems (particularly older, microcode-based architectures) can also perform various transcendental functions such as exponential or trigonometric calculations, though in most modern processors these are done with software library routines.
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