# How to reconstruct floats stored in PoolByteArray?

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I’m sending UDP packets to a PC that runs a Godot app. The packets contain 4 byte floats. I’m using PacketPeerUDP to receive the packets. The problem is that, PacketPeerUDP has only a method (get_packet()) to read packets as bytes and not as floats… How to reconstruct the the packets as floats? (I don’t want to use get_var() because it introduces extra overhead to the sender)
Any ideas are highly appreciated.

Maybe you can use a `StreamPeerBuffer`? StreamPeerBuffer — Godot Engine (stable) documentation in English

The actual implementation could be something like this:

``````var spb = StreamPeerBuffer.new()
spb.data_array = pkt
var single_float = spb.get_float()
``````

programagor | 2020-09-03 04:54

I had to resort to brute-forcing the solution, according to the IEEE754 specifications.

``````func bin2float(pkt:PoolByteArray) -> float:
#Convert packet to an array of bools
var arr:Array=[]
for byte in pkt:
for _i in range(0,8):
arr.append(byte%2)
byte/=2

#Extract sign
var r_sign:int
if arr[31]==1:
r_sign=-1
else:
r_sign=1

#Extract exponent
var r_exp:int=0
for i in range(30,22,-1):
r_exp*=2
r_exp+=arr[i]
r_exp-=127

#Extract mantissa
var r_mant:float=0
for i in range(0,23):
r_mant+=arr[i]
r_mant/=2
r_mant+=1

return r_sign*pow(2,r_exp)*r_mant
``````

Of course this is terribly slow, and a real native solution would still be greatly appreciated, but this works in the meantime.