[tavish1]

One reason would be, as already mentioned, about embedded systems not having floating point support, making number calculations slow(even with fixed point, maybe?).

A somewhat related thing(not addressed by this yet) is about Electric Imp, who had to switch to a different language from lua(which they started with). The reason was that they needed to store values for an LED array, and the only data type is tables, and all integers are 32 bit.

Not sure but they might have used user defined types, with the arrays stuff being done in C, might have been easier.