Oct. 29, 2011
10:55 p.m.
Hi, Can anyone think of a good way to set a float128 value to an arbitrarily large number? As in v = int_to_float128(some_value) ? I'm trying things like v = np.float128(2**64+2) but, because (in other threads) the float128 seems to be going through float64 on assignment, this loses precision, so although 2**64+2 is representable in float128, in fact I get: In [35]: np.float128(2**64+2) Out[35]: 18446744073709551616.0 In [36]: 2**64+2 Out[36]: 18446744073709551618L So - can anyone think of another way to assign values to float128 that will keep the precision? Thanks a lot, Matthew