Can MATLAB be changed to single precision "mode"

Question

David Goldsmith 2011-11-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/21982-can-matlab-be-changed-to-single-precision-mode

Hi! I'm reimplementing a compiled FORTRAN code package in MATLAB, and I just discovered that the "original" is doing everything in single precision. Producing results that are "as identical as they can be" to those produced by the basis package has a higher premium than the extra precision provided by MATLAB's default of doing everything in double, so I'm faced with having much of my code wrapped with single() functions, unless there's a way to put MATLAB into single precision "mode" I wasn't able to find searching the help for "single." Thanks!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2011-11-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/21982-can-matlab-be-changed-to-single-precision-mode#answer_28937

There is no such mode.

The closest you get is something supported only on some versions under MS Windows. See this thread for hints -- and be sure to notice the strange results that can occur.

See also, though, <http://www.mathworks.com/support/solutions/en/data/1-79FEJH/index.html?product=ML&solution=1-79FEJH> which implies you cannot control the precision of some operations.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

David Goldsmith 2011-11-22

Thanks, Walter. I kind of assumed I wouldn't be able to alter the precision of the operations, I was more hoping for simply automatic rounding of all operation results to single precision. I noted at the end of "this thread" a reference to a "multiple precision toolbox in the FEX"--I'll give that a look-see. Thanks again.

请先登录，再进行评论。