Store and recall display format
Re: Store and recall display format
Update: code removed as it contained bugs (yes, plural. I'm slipping). See a few posts down for a much improved version.
Hi Bob,
I was referring to this, the POP/PUSH stack program that needs a 4column matrix to hold the stack levels.
The following program uses that STACK matrix, and will SAVE and RESTORE the mode, and keep the stack  including LastX  intact while doing so. Drawback is that the stack may not hold matrices or complex numbers  use RCLMODE and STOMODE then.
It can be easily adapted to also take into account flags 42 and 43 that hold the DEG/RAD/GRAD mode.
So, you do
XEQ "SAVMODE"
<change things>
XEQ "RSTMODE"
Since the STACK matrix is also used for PUSHing and POPping the stack, make sure there are an equal number of both in the <change things> part
Cheers, Werner
Hi Bob,
I was referring to this, the POP/PUSH stack program that needs a 4column matrix to hold the stack levels.
The following program uses that STACK matrix, and will SAVE and RESTORE the mode, and keep the stack  including LastX  intact while doing so. Drawback is that the stack may not hold matrices or complex numbers  use RCLMODE and STOMODE then.
It can be easily adapted to also take into account flags 42 and 43 that hold the DEG/RAD/GRAD mode.
So, you do
XEQ "SAVMODE"
<change things>
XEQ "RSTMODE"
Since the STACK matrix is also used for PUSHing and POPping the stack, make sure there are an equal number of both in the <change things> part
Cheers, Werner
Last edited by whuyse on Fri Feb 16, 2018 8:13 am, edited 1 time in total.
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Re: Store and recall display format
By the way, thanks to help from here, the program I wrote now stores the display mode and returns to it after EXITing. I'll post the code later, need to pop to the shop now.
Re: Store and recall display format
Here's my latest concoction.
I decided to focus solely on Save & Restore functionality, but without use of the STACK matrix.
So, the following programs Save and Restore the Mode (well, display mode FIX/SCI/ENG/ALL, DEGRAD, Thousands separator, comma or decimal point, Rectangular/Polar and Complex or Real results).
Both programs leave the stack intact, whatever it may contain (matrices, complex numbers, ..). Both use the variable 'Mode' and one or two temporary variables that are deleted on exit. Restoring the mode leaves the 'Mode' variable intact.
BTW my previous programs contained a bug, restoring SCI and ENG were swapped. Corrected (and improved) here.
Cheers, Werner
I decided to focus solely on Save & Restore functionality, but without use of the STACK matrix.
So, the following programs Save and Restore the Mode (well, display mode FIX/SCI/ENG/ALL, DEGRAD, Thousands separator, comma or decimal point, Rectangular/Polar and Complex or Real results).
Both programs leave the stack intact, whatever it may contain (matrices, complex numbers, ..). Both use the variable 'Mode' and one or two temporary variables that are deleted on exit. Restoring the mode leaves the 'Mode' variable intact.
BTW my previous programs contained a bug, restoring SCI and ENG were swapped. Corrected (and improved) here.
Code: Select all
00 { 200Byte Prgm }
01▸LBL "RSTMode"
02 STO ".x"
03 R↓
04 STO ".y"
05 CLX
06 RCL "Mode"
07 5
08 DEG
09 BIT?
10 GRAD
11 DSE ST X
12 BIT?
13 RAD
14 DSE ST X
15 RECT
16 BIT?
17 POLAR
18 DSE ST X
19 CPXRES
20 BIT?
21 REALRES
22 DSE ST X
23 CF 28
24 BIT?
25 SF 28
26 CLX
27 CF 29
28 BIT?
29 SF 29
30 CLX
31 64
32 STO÷ ST Y
33 X<> ST L
34 X<>Y
35 IP
36 ABS
37 CLX
38 4
39 STO÷ ST L
40 X<> ST L
41 FP
42 STO+ ST X
43 STO+ ST X
44 SCI IND ST L
45 DSE ST X
46 FIX IND ST L
47 X=0?
48 ENG IND ST L
49 DSE ST X
50 ALL
51 R↓
52 STO ST L
53 GTO 00
54▸LBL "SAVMode"
55 STO ".x"
56 CLX
57 36.043
58 R↓
59 STO ".y"
60 CLX
61 XEQ 04
62 73.074
63 R↓
64 XEQ 04
65 28.029
66 R↓
67 XEQ 04
68 STO "Mode"
69▸LBL 00
70 X<> ".y"
71 RCL ".x"
72 CLV ".x"
73 CLV ".y"
74 RTN
75▸LBL 04
76 STO+ ST X
77 FS? IND ST T
78 ISG ST X
79▸LBL 04
80 ISG ST T
81 GTO 04
82 END
Last edited by whuyse on Sat Feb 17, 2018 11:29 am, edited 2 times in total.
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Re: Store and recall display format
Bravo Werner!!
This is not only extremely useful for everyday programming, but it also employs advanced techniques with variables and system programming, plus as usual, some lessons in efficient stack juggling.
Though having this provided by new system commands might be a tiny bit more transparent, this is close enough for me and also serves as an instructional tool. I withdraw my request for new save/restore state commands.
Thanks very much!
bob p
DM42: β00071 & 00282
DM42: β00071 & 00282
Re: Store and recall display format
Thanks Bob. Tweaked it a little, and updated the previous post accordingly.
Cheers, Werner
Cheers, Werner
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Re: Store and recall display format
Updated it again.. 10 bytes less. Guess that's it, but 'never say never'.
Werner
Werner
42S #3249S01123
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Re: Store and recall display format
Obsession is never pretty... but it often produces shorter programs. Thx for sharing.
bob p
DM42: β00071 & 00282
DM42: β00071 & 00282
Re: Store and recall display format
But that's the fun part?
The first part is 'make it work'.
Second is to improve it and make short, elegant code  even if today we have memory galore. Old habits die hard.
Cheers, Werner
The first part is 'make it work'.
Second is to improve it and make short, elegant code  even if today we have memory galore. Old habits die hard.
Cheers, Werner
42S #3249S01123
DM42 #00345
DM42 #00345