Free42 possible accuracy flaw

[J-F Garnier]

(03-22-2022 07:11 PM)Albert Chan Wrote:  x = 1e8
b = 1+1/x

b^(2^08) = 1.000002560003264002763521747927282
b^(2^13) = 1.000081923355125194292436470243333
...
b^(2^26) = 1.956365933428064586618947538663749

All terms to multiply has errors on the *same* side; losing 7 digits precision is normal.

I can't find any similar problem with Free42 Binary (still 3.0.10):

x = 2^27
b = 1+1/x
b^(2^08) = 1.000001907350445
b^(2^13) = 1.000061037018706
b^(2^26) = 1.648721267629145 (all correct)

Any reason why the Decimal and Binary versions behave differently?

J-F