Write a small library in the C programming language to do Minifloat (Links to an external site.) (8-bit binary floating-point numbers) operations.

Notes

1. You have to come up with a sensible representation and stay consistent throughout a library.
2. The internal representation (e.g. a struct) does not have to match the external representation (e.g. just a binary pattern, or a pointer to an abstract data type).
3. Be careful of memory leaks. For example, do not return a pointer to a local static variables in a function. Instead, allocate on the heap with malloc and then return the pointer to that.

Minimum requirements

Meeting these requirements will collect the regular points.

1. add - Add two Minifloat numbers and return the result.
2. mult - Multiply two Minifloat numbers and return the result.