## DM42 wins over WP34S in accuracy..

### DM42 wins over WP34S in accuracy..

Some have pointed out that the WP34S in double precision modeis also accurate to 34 decimal places compared to the DM-42...But there is another factor to consider when picking the title of worlds most accurate calculator ever in physical form, entering large numbers. If you multiply 12345678987654321 times 7777777...and divide that result by 7777777 on the DM-42 you get the full correct result back of 12345678987654321. This is NOT the case if you try to do that with a WP34S...The DM-42 is the most accurate physical calculator ever made, it wins the Title!!!!

### Re: DM42 wins over WP34S in accuracy..

PS, I say most accurate "physical" calculator, since there are computer program calculators that are more accurate like the Windows "HiPERCalc and the MPCalcRB computer program.

- Mark Hardman
**Posts:**65**Joined:**Wed May 03, 2017 1:26 am**Location:**Houston, TX

### Re: DM42 wins over WP34S in accuracy..

Nope. The 34S has the same accuracy in this case. The difference is in the UI of the 34S which only allows the entry of 12 digits at a time. If I do the following with DBLON:

1.23456789E16

ENTER

87654321

+

7777777

X

7777777

/

I get the expected result of 1.2345678987654321E16

1.23456789E16

ENTER

87654321

+

7777777

X

7777777

/

I get the expected result of 1.2345678987654321E16

DM42 S/N: 00043 (Beta)

DM42 S/N: 00065 (Beta)

DM42 S/N: 00357

DM42 S/N: 00065 (Beta)

DM42 S/N: 00357

### Re: DM42 wins over WP34S in accuracy..

Very round about way of getting it down...Since one does not have to go through hoops on the DM42 I still maintaine that it keeps the title of miost accurate physical calculator ever made.

### Re: DM42 wins over WP34S in accuracy..

We ran out of RAM on the 34S to hold a longer entry buffer plus the display is limited. I'm kind of surprised that ignorance of a purposeful limitation is claimed to be less accurate. We have several examples where the 34S is producing a correctly rounded result and the Intel decimal library isn't. The former cannot be considered less accurate.

Pauli

Pauli

### Re: DM42 wins over WP34S in accuracy..

I willing to go way out on a limb here and state that if the Intel decimal library is more accurate than the 34S for any built in function, I'll attempt to fix the latter.

- Pauli

- Pauli

### Re: DM42 wins over WP34S in accuracy..

It won't take long anymore and I might have to visit my UCP for my own protection.

DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

### Re: DM42 wins over WP34S in accuracy..

We're not in God's own country here! Please behave like a European! No firearms!!

DM42 SN: 00041 --- Follower of Platon.

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L