Can MATLAB be changed to single precision "mode"

2011 11 22
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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!

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Walter Roberson
Walter Roberson 2011-11-22

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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.

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David Goldsmith
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.

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