How to force MATLAb to use 32bit floating-point numbers in a script?

Is it possible to use 32bit precision thru a script or part of the script without editing the whole code?

[John D'Errico]

No. You cannot simply tell MATLAB to change precision from outside the code.

[dpb]

On top of which, you can't define a default precision for a script within a script or function file; you can only cast to a given precision on assignment and then ensure all variables in all related calculations are also of same class or follow other strict rules to avoid results being default doubles.

Answer 1

[Walter Roberson]

Yes, but only on MS Windows

https://www.mathworks.com/matlabcentral/answers/47142-how-to-set-matlab-precision-to-single

[dpb]

Doesn't it only control the rounding mode? I couldn't demonstrate to my satisfaction that it actually did anything discernible in R2016b here; seems like in times gone by one could see the effect but I've forgotten the details of how/what did those many years ago...

I'm presuming the OP wants to actually have everything only take up single precision in memory as well???