Reversal of .bin()

I’m wondering if there is a way to revert calling .bin(). Something like:

x1 = Fxp(3.4)
x_bin = x1.bin()
x2 = from_bin(x_bin)
assert x1 == x2

My use case is to convert into the notation, do some operations, then convert the result back over. I see the constructor can take in a binary value but it looks like it only takes in a “normal” python bit string. Is this possible currently?

[francof2a]

Yes, it would be good! I’ll try to include that in next release. Thanks for the recommendation.

[francof2a]

As you are using 2 bits for fractional part, 256.2 is rounded to 256.0. You need more fractional bits to get a fixed-point value closer to 256.2.

With 2 bits for fractional part, the closer values to 256.2 are 256.0 and 256.25. If you use rounding='ceil' or rounding='around', you will get a fixed-point value of 256.25 instead of 256.0.

ret_int = Fxp(float_val, n_word=32, signed=True, n_frac=2, n_int=29, rounding='ceil')

If you fix the n_word size to 32 but let to Fxp finds the best fractional part:

ret_int = Fxp(float_val, n_word=32, signed=True)

fxp-s32/22(256.19999980926514)