Search found 234 matches
- Wed Mar 13, 2024 2:55 am
- Forum: C47/C43, WP43, WP34S
- Topic: Inquiry: C47 Bigint Capabilities
- Replies: 26
- Views: 928
Re: Inquiry: C47 Bigint Capabilities
I don't remember the C47 supporting Euler's ϕ. We could expose more of the number theoretic integer functions is there was sufficient interest.
- Mon Mar 11, 2024 4:54 am
- Forum: DM32 BETA Bugs
- Topic: DM32 Numerical Precision for Transcendental Functions
- Replies: 14
- Views: 882
Re: DM32 Numerical Precision for Transcendental Functions
The WP 34S calculates internal results to 39 digits (mostly) and then rounds to 34. I'm not yet aware of a case where it rounds incorrectly, at least for the fundamental functions. The WP 34S doesn't carry any hidden digits between the user's operations. TI used to do this and IMO it's quite mislead...
- Sun Mar 10, 2024 9:30 pm
- Forum: C47/C43, WP43, WP34S
- Topic: C47: Integration performance and accuracy
- Replies: 42
- Views: 4039
Re: C47: Integration performance and accuracy
It's never been this IMO. The WP 34S is more accurate due to rounding correctly more often.
Still it's only been 1 ULP out that I've seen.
- Sun Mar 10, 2024 11:50 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47: Integration performance and accuracy
- Replies: 42
- Views: 4039
Re: C47: Integration performance and accuracy
It isn't a problem inherent to using decimal128 -- both Intel's library and the C47 use decimal128 for registers.
I doubt the Intel mathematics library will be "improved".
I doubt the Intel mathematics library will be "improved".
- Wed Feb 28, 2024 8:15 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47 bezel available
- Replies: 63
- Views: 12690
Re: C47 bezel available
I suspect the goal is to encourage wide spread adoption of the C47 software. To that end, we need to encourage the use of the spiff72 overlays. He is distributing in the US. They only cost $5. The spiff72 adhesive overlay looks as good, or maybe even better than the "other" ;) overlay. He...
- Wed Feb 28, 2024 8:13 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47 bezel available
- Replies: 63
- Views: 12690
- Tue Feb 27, 2024 5:01 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47 bezel available
- Replies: 63
- Views: 12690
Re: C47 bezel available
IMO pie charts are rubbish. Converting a linear value into a quadratic area greatly enhances any large value contributions. That it is visual is great but it is quite misleading. I have a similar objection to least squares fits [outliers contribute quadratically to the outcome]. To avoid knee jerk r...
- Mon Feb 26, 2024 1:25 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47 bezel available
- Replies: 63
- Views: 12690
Re: C47 bezel available
114 more overlays there.
It seems like quite a few devices are being converted to the C47.
It seems like quite a few devices are being converted to the C47.
- Sun Feb 25, 2024 3:36 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47: Integration performance and accuracy
- Replies: 42
- Views: 4039
Re: C47: Integration performance and accuracy
Am I doing something really wrong? I don't think so. Even using the 34S in double precision isn't going to be comparable to the C47. The 34S doesn't use more accurate algorithms when in double precision, rather it does the same thing as it would in single precision mode. The C47 has had some algori...
- Fri Feb 23, 2024 3:00 am
- Forum: C47/C43, WP43, WP34S
- Topic: C47: Integration performance and accuracy
- Replies: 42
- Views: 4039
Re: C47: Integration performance and accuracy
The C47 jumps to longer internal reals moderately often. The WP 34S was designed so that 16 digit results were accurate. The C47 produces 34 digit results which will often take longer. The 34S in double precision mode also produces 34 digit results but only limited updates to the mathematical routin...