Float

Sneklang needs floats (obviously). How else will all the crypto bros write weird floating-point bugs into their smart contracts?

So how do we store both floats and ints into the same type?

We're going to use the union and enum features in C to be able to do this, just like we discussed in previous chapters. You will need to extend the existing snek_object_kind_t and snek_object_data_t types to be able to include both ints and floats (and we will continue to add more types in the following chapters to exercise your newfound mastery of memory management).

Assignment

You will need to edit 2 files in this lesson! snekobject.c and snekobject.h.

1. In snekobject.h:
   1. Add a new enum value to the snek_object_kind_t enum called FLOAT.
   2. Add a new float field to snek_object_data_t called v_float.
   3. Declare the new_snek_float function.
2. In snekobject.c, complete the new_snek_float function. It should:
   1. Allocate memory for a new pointer to a snek_object_t.
   2. If the allocation fails, return NULL.
   3. Set the kind field to the appropriate enum.
   4. Store the float value in the object.
   5. Return the pointer to the new snek object.