How to get raw representation (as given by hex()) from an Fxp

[aniongithub]

Without converting to/from string? I need to convert floats to fixed point and upload them to CUDA memory for computations. All the astype functions convert the actual value and I can't find anything that provides the fixed-point representation.

[francof2a]

Hello Ani, first let me convert this issue to a discussion.

I guess you need get the int value which represents the raw value of the fixed-point. In that case, you can use raw method.

from fxpmath import Fxp

x = Fxp(0.25, dtype='s8.8')
x.raw() # returns 64 as raw value

If my assumption is wrong, please write an example with the desired output.

[aniongithub]

Thanks for the reply!

That works great for a single value, but I have a 2D numpy array of floats that I want the raw representation for. Is there a way I can get them all in a single copy operation? Iterating element by element is slow.

[francof2a]

You could convert a entire Numpy array and then get the raw value in the same way.

a = np.random.random((3, 2)) # a 2D Numpy array
a_fxp_raw = Fxp(a, dtype='s8.8').raw()

Does this help you?

Note: If you already have a Fxp variable defined, like x in the first example, you can modify its value and get the raw value without the need of create a new Fxp.

a_fxp_raw = x(a).raw()