Search found 202 matches

by ijabbott
Sun May 09, 2021 11:23 am
Forum: Discuss!
Topic: May 2021 Speculations
Replies: 78
Views: 7643

Re: May 2021 Speculations

nlj wrote:
Sat May 08, 2021 12:39 pm
4. An (optional) aesthetically-pleasing display font on the DM41X.
Even a font with overlapping segments would look better, and wouldn't need any changes to the underlying ROM code that chooses the segments to be displayed.
by ijabbott
Thu May 06, 2021 11:23 pm
Forum: Developer Forum
Topic: WP34S for the DM42
Replies: 85
Views: 5639

Re: WP34S for the DM42

Walter wrote:
Mon May 03, 2021 10:58 pm
IIRC, the letters 'x-hat' and ŷ were and are provided in the character sets of the WP34S (just the software of this forum can't display an 'x-hat'). It may look more professional in the respective menus.
You mean like this: x̂? :-)
by ijabbott
Mon Apr 26, 2021 10:51 pm
Forum: Discuss!
Topic: RPN in education
Replies: 27
Views: 2781

Re: RPN in education

As a student, and as someone who is a anal about answers being exact, it would be VERY helpful if there was a way to display a result as a multiple of π, √2,e, ..., etc. As much as I love using the rpn calculator, my Ti 36x pro does the job automatically by just pressing the exact/approx button. An...
by ijabbott
Mon Apr 26, 2021 10:39 pm
Forum: Usage tips, tricks and problem reports
Topic: DM42 resets during program run
Replies: 16
Views: 1280

Re: DM42 resets during program run

There is no such type as double double in C/C++. I think you mean long double ? GCC supports 128-bit floating point on some architectures, including x86 and AArch64/ARM64 using the _Float128 / __float128 type and libquadmath . (Also, your program listings are a mess. One instruction per line please!)
by ijabbott
Thu Apr 22, 2021 11:52 pm
Forum: Discuss!
Topic: Fancy Leather Cases
Replies: 56
Views: 5558

Re: Fancy Leather Cases

Alphacentauri wrote:
Wed Apr 21, 2021 8:06 pm
Anyone close to Spain able to loan temporarily to the business to do a mockup? They then can show us all the results on this forum.
I guess a dummy with the same dimensions as the calculator would do for mocking up a case, wouldn't it?
by ijabbott
Sat Apr 10, 2021 2:26 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 1296

Re: LOG bases

(Nitpicky remark: LG is identical to LOG10 like LN being identical to LOGe and LB to LOG2. Never let any mathematician catch you with a naked LOG in your text!) I think pure mathematicians tend to assume \(\log\) means \(\log_e\) because they don't have a lot of use for \(\log_{10}\). Yes. In fact,...
by ijabbott
Fri Apr 09, 2021 8:44 pm
Forum: Developer Forum
Topic: WP34S for the DM42
Replies: 85
Views: 5639

Re: WP34S for the DM42

Feel free to ignore this suggestion, but would it be possible to combine the three display options into a single executable? I'm not sure of all the implications of that, but I guess it would need a configuration menu somewhere, and some hard-coded constants changed into variables.
by ijabbott
Tue Mar 23, 2021 10:12 pm
Forum: DM42
Topic: LOG bases
Replies: 18
Views: 1296

Re: LOG bases

Walter wrote:
Sat Mar 20, 2021 11:13 am
(Nitpicky remark: LG is identical to LOG10 like LN being identical to LOGe and LB to LOG2. Never let any mathematician catch you with a naked LOG in your text!)
I think pure mathematicians tend to assume \(\log\) means \(\log_e\) because they don't have a lot of use for \(\log_{10}\).
by ijabbott
Tue Mar 23, 2021 10:05 pm
Forum: Developer Forum
Topic: WP34S for the DM42
Replies: 85
Views: 5639

Re: WP34S for the DM42

I am having a spot of bother getting the program to run on my DM42, so just to confirm that these steps should work: 1) Git cloned the project. 2) Activated USB disk mode on the DM42. 3) Copied the build/wp34s.pgm file to the root dir of the USB disk. 4) Copied the help/wp34s_help.html file to the ...
by ijabbott
Tue Mar 23, 2021 9:40 pm
Forum: Usage tips, tricks and problem reports
Topic: third root of -8...
Replies: 25
Views: 1929

Re: third root of -8...

This "unary minus," having higher precedence than subtraction, is something I seem to have found in every parser textbook I've ever looked at, but I can't figure out where it comes from. It doesn't seem to have originated from mathematics, or at least, all the math textbooks I have ever s...