Why is there no FPU (Floating Point Unit) on most DSP chips? I found several answers such as this one that explain advantages of fixed point approach such as smaller power consumption, higher speed and I can myself think of several other advantages such as smaller heat production or price but I have never seen any practical real life benchmarks. The questions I would like to know answers for are:
how much is FPU and what is the price difference between CPUs with an FPU and CPUs without an FPU?
how much heat can FPU produce?
how much power would FPU consume?