The example looks at the constant of pi, which the Pentium’s FPU has stored as a version with no fewer than 67 significand bits along with its exponent. Multiplexer circuitry allows for the ...

Of the FPU, nearly half is dedicated to performing ... (multiplying by two is the same as shifting left by 1 bit, for example) but multiplying by three is the only one that doesn’t have a ...