## Search found 160 matches

- Fri Mar 15, 2019 12:31 pm
- Forum: Update Announcements
- Topic: UPDATE: DMCP-3.13 / DM42-3.13
- Replies:
**40** - Views:
**6140**

### Re: UPDATE: DMCP-3.13 / DM42-3.13

Perfect update with the combo file from 3.12. The new file management with directories, increased file items and two column display is really cool :) Just noticed one thing: if you move to the <Parent> directory from the PROGRAMS or STATE directories, then both of them are not listed and you cannot ...

- Thu Mar 14, 2019 11:20 pm
- Forum: Software Library
- Topic: External stack
- Replies:
**43** - Views:
**5018**

### Re: External stack

You can also see the PUSH/POP stack routines published earlier in this sub-forum.

- Wed Feb 20, 2019 6:11 am
- Forum: Discuss!
- Topic: Little Problem with Complex Mathematics on Calculators
- Replies:
**25** - Views:
**2949**

- Sat Feb 16, 2019 10:44 am
- Forum: Discuss!
- Topic: Little Problem with Complex Mathematics on Calculators
- Replies:
**25** - Views:
**2949**

### Re: Little Problem with Complex Mathematics on Calculators

Well, I think that the real question is how you add infinity to ℂ. As far as I know this is called the compactification of ℂ. With the Riemann sphere and the associated extended complex plane there is only one complex infinity, so if I understand it correctly there is nothing like i ∞, juste one com...

- Fri Feb 15, 2019 9:49 am
- Forum: Discuss!
- Topic: Little Problem with Complex Mathematics on Calculators
- Replies:
**25** - Views:
**2949**

### Re: Little Problem with Complex Mathematics on Calculators

Doing some research I’ve found that for both Wolfram Alpha and the HP Prime: SQRT(-1/0) returns the complex infinity (which is not i ∞ ). As you’re taking the square root of a negative value you're moving to the complex plane where there is only one infinity, the complex infinity which is linked to ...

- Fri Feb 15, 2019 8:40 am
- Forum: Discuss!
- Topic: Little Problem with Complex Mathematics on Calculators
- Replies:
**25** - Views:
**2949**

### Re: Little Problem with Complex Mathematics on Calculators

We all know that SQRT( -∞ ) = i ∞ . The calculator returns 0. + i ∞ which is perfectly equivalent. Probably not competent either, but I know that infinity is tricky... For example you can also say that -i + i ∞ is perfectly equivalent to i ∞ . But (-i + i ∞ )*(-i + i ∞ ) = -1 - ∞ +2 ∞ which is unde...

- Fri Dec 28, 2018 3:50 pm
- Forum: DM42
- Topic: Dave Jones (EEVBLOG) tries the DM42
- Replies:
**11** - Views:
**1911**

### Re: Dave Jones (EEVBLOG) tries the DM42

What value did you had in the X-register when you launched RFC?

I have not tested RFC on my DM42, but I did test it on Free42 and it is working with for ex. 15 or 19 as the start value.

I have not tested RFC on my DM42, but I did test it on Free42 and it is working with for ex. 15 or 19 as the start value.

- Thu Dec 20, 2018 12:40 pm
- Forum: Discuss!
- Topic: What do all those bots here?
- Replies:
**8** - Views:
**1423**

### Re: What do all those bots here?

Indexing for search engines I suppose...

I don't think they are really looking for DM42 tips, well maybe Alexa, to be able to answer to anybody yelling in his kitchen: "how much pounds of flour do I need for my pancakes?"

with "let me pull my DM42 and do the calculation for you"

I don't think they are really looking for DM42 tips, well maybe Alexa, to be able to answer to anybody yelling in his kitchen: "how much pounds of flour do I need for my pancakes?"

with "let me pull my DM42 and do the calculation for you"

- Thu Dec 13, 2018 8:55 am
- Forum: DM42
- Topic: Feature requests
- Replies:
**33** - Views:
**5107**

### Re: Feature requests

... REM "comment" RCL+ 17 ... In a keystroke programming model you would have: step xxx REM step xxx+1 "comment" step xxx+2 RCL+ 17 The new REM instruction would just skip the next step to avoid putting the comment string in the Alpha register. You can already do this with: step xxx FS? 52 step xxx...

- Thu Dec 13, 2018 7:48 am
- Forum: DM42
- Topic: Feature requests
- Replies:
**33** - Views:
**5107**

### Re: Feature requests

How would you implement this in a keystroke programming model such as the 42S one? /* would obviously be translated to divide and multiply instructions...