Question

I have a function from an external source that returns an array of 2 uint16_t elements (which I cast to int).

I have already been able to cast these to one “big” int ((i1 << 16) + i2)

Now I need to be able to cast this to float, keeping the point value as is in memory.

Can anyone suggest a way or point me in the right direction?

Thanks in advance!

Answer 1

I’d use a union:

union fltconv {
    float f;
    uint32_t i;
} u;
u.i = ((uint32_t) i1 << 16) | i2;
float f = u.f;

It’s more explicit about what you’re doing. Bear in mind that this is very nonportable.