Free42 possible accuracy flaw
03-27-2022, 10:58 PM
Post: #32
 Albert Chan Senior Member Posts: 2,711 Joined: Jul 2018
RE: Free42 possible accuracy flaw
(03-25-2022 08:35 AM)Thomas Okken Wrote:  Now I am curious what makes that [3^729] an interesting test case, though!

For 34 decimal digits, 3^729 is close to half-way.

round38(3^729) = 6.6281860542418717610517286421447974859E+347

However, Intel Decimal get this right really by luck. (see previous post)
The flawed step, correction *after* rounded exponential, does not hurt the result.

round38(log3 * 729) = 800.88835843905196502713377771652123869

800.8883584390519650271337777165212
E^X                        → 6.628186054241871761051728642144541e347
3.869E-32
X<>Y * LASTX +      → 6.628186054241871761051728642144797e347
 « Next Oldest | Next Newest »

 Messages In This Thread Free42 possible accuracy flaw - J-F Garnier - 03-22-2022, 12:33 PM RE: Free42 possible accuracy flaw - Albert Chan - 03-22-2022, 04:31 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-22-2022, 05:18 PM RE: Free42 possible accuracy flaw - Albert Chan - 03-22-2022, 07:11 PM RE: Free42 possible accuracy flaw - J-F Garnier - 03-24-2022, 10:20 AM RE: Free42 possible accuracy flaw - J-F Garnier - 03-24-2022, 07:18 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-22-2022, 05:39 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-22-2022, 07:38 PM RE: Free42 possible accuracy flaw - Werner - 03-23-2022, 07:30 AM RE: Free42 possible accuracy flaw - Thomas Okken - 03-22-2022, 10:08 PM RE: Free42 possible accuracy flaw - J-F Garnier - 03-23-2022, 07:57 AM RE: Free42 possible accuracy flaw - Albert Chan - 03-25-2022, 02:58 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-23-2022, 08:05 AM RE: Free42 possible accuracy flaw - Werner - 03-23-2022, 08:49 AM RE: Free42 possible accuracy flaw - Thomas Okken - 03-23-2022, 12:07 PM RE: Free42 possible accuracy flaw - Albert Chan - 03-24-2022, 04:53 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-23-2022, 06:02 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-23-2022, 07:43 PM RE: Free42 possible accuracy flaw - Albert Chan - 03-23-2022, 07:50 PM RE: Free42 possible accuracy flaw - Albert Chan - 03-23-2022, 09:11 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-24-2022, 11:02 AM RE: Free42 possible accuracy flaw - J-F Garnier - 03-24-2022, 01:02 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-24-2022, 05:01 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-24-2022, 07:45 PM RE: Free42 possible accuracy flaw - Werner - 03-25-2022, 07:03 AM RE: Free42 possible accuracy flaw - J-F Garnier - 03-25-2022, 08:03 AM RE: Free42 possible accuracy flaw - Werner - 03-30-2022, 08:04 AM RE: Free42 possible accuracy flaw - Albert Chan - 03-30-2022, 11:51 PM RE: Free42 possible accuracy flaw - Thomas Okken - 03-25-2022, 08:35 AM RE: Free42 possible accuracy flaw - Albert Chan - 03-27-2022 10:58 PM RE: Free42 possible accuracy flaw - Werner - 03-25-2022, 08:53 AM RE: Free42 possible accuracy flaw - J-F Garnier - 03-25-2022, 11:12 AM RE: Free42 possible accuracy flaw - Thomas Okken - 03-25-2022, 09:06 AM RE: Free42 possible accuracy flaw - Thomas Okken - 03-25-2022, 09:18 AM

User(s) browsing this thread: 1 Guest(s)