Math coprocessor | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-07

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Floating-point_unit


00:01:26 1 History
00:02:52 2 Floating-point library
00:04:18 3 Integrated FPUs
00:05:44 4 Add-on FPUs
00:07:10 5 See also



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SUMMARY
=======
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.
In general purpose computer architectures, one or more FPUs may be integrated as execution units within the central processing unit; however many embedded processors do not have hardware support for floating-point operations (while they increasingly have them as standard, at least 32-bit ones).
When a CPU is executing a program that calls for a floating-point operation, there are three ways to carry it out:

A floating-point unit emulator (a floating-point library)
Add-on FPU
Integrated FPU