每個電腦科學家都應知道的浮點算數 |
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高階會員 發表:93 回覆:228 積分:109 註冊:2002-09-15 發送簡訊給我 |
What Every Computer Scientist Should Know About Floating-Point Arithmetic Abstract Floating-point arithmetic is considered an esoteric subject by many
people. This is rather surprising because floating-point is
ubiquitous in computer systems. Almost every language has a
floating-point datatype; computers from PCs to supercomputers have
floating-point accelerators; most compilers will be called upon to
compile floating-point algorithms from time to time; and virtually
every operating system must respond to floating-point exceptions
such as overflow. This paper presents a tutorial on those aspects
of floating-point that have a direct impact on designers of
computer systems. It begins with background on floating-point
representation and rounding error, continues with a discussion of
the IEEE floating-point standard, and concludes with numerous
examples of how computer builders can better support
floating-point. HTML:
http://docs.sun.com/source/806-3568/ncg_goldberg.html PDF:
http://www.wldelft.nl/soft/d3d/intro/misc/goldberg.pdf
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