sign 
s = −10 s = 0
exponent
e = e = e = p = e − 127 p =
significand
n = n = n = n = n =
n = n = × () n = −10 × 2 × () n = −10 × 2−127 × () n = −1s × 2e−127 × ( + ∑ b23-i 2-i )