How to convert byte array to float

[byron via Digitalmars-d-learn]

On Friday, 17 July 2015 at 18:53:24 UTC, byron wrote:
> On Friday, 17 July 2015 at 18:43:27 UTC, DLangLearner wrote:
>> Excuse me for my trivial question, but I'd like to know how to 
>> convert byte array to float? What I could think of are 
>> cast(float)(byte[]) and to!float(byte[]) but they do not work 
>> for me. Thanks!
>
> You want to include [] in the cast so:
>
>
>
> byte[] b = [1, 2, 3, 4]
> byte[] f = cast(float[])b;
>
> writeln(b);
> writeln(f);
>
> You can even cast on a slice:
>
> byte[] b = [1, 2, 3, 4, 5, 6, 7, 8]
> byte[] f = cast(float[])b[4..8];

Ah I miss read, if you want as a float, not a float array you can 
do:

byte[] b = [1, 2, 3, 4];
float f = *cast(float*)b.ptr;

not sure if there is a better way