24 Déc
2013
24 Déc
'13
14:17
On Dec 24, 2013, at 1:54 PM, Mikael mikael.rcv@gmail.com wrote:
Ah - http://www.binaryconvert.com/result_double.html?decimal=048046051 clarifies that
0.3 is represented internally as 2.99999999999999988897769753748E-1 ,
so this is what inexact->exact converts to 5404319552844595/18014398509481984 .
Hmmm… that’s not the exact decimal representation of the floating point 0.3. In Gambit, to know the exact decimal expansion of an inexact number you can use multiplication by a large power of 10:
(* (expt 10 70) (inexact->exact 0.3))
2999999999999999888977697537484345957636833190917968750000000000000000
Marc