minexp(x) = -64 for x float bin(p), p <= 21 minexp(x) = -64 for x float bin(p), 21 < p <= 53 minexp(x) = -50 for x float bin(p), 53 < p minexp(x) = -64 for x float dec(p), p <= 6 minexp(x) = -64 for x float dec(p), 6 < p <= 16 minexp(x) = -50 for x float dec(p), 16 < p