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+--- Thread: (12C) Modulo Operation (/thread-21973.html)
(12C) Modulo Operation - Gamo - 06-30-2024 05:15 AM
Modulo (MOD) operation returns the remainder of a division.
All the HP Voyager Series (10, 11, 12 and 15) not include
the MOD function except the 16.
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Let's calculate this MOD Operation manually.
example: 1155 MOD 13
1155 [ENTER] 13
►[ENTER] [ENTER] [-] [R↓] [X<>Y] [LSTx] [÷] [INTG] [x] [-]
Display Answer 11
With this manually key in operation can be easily input those
keys sequence as a program start from ► the whole line.
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Once key in as a program let's try one more example.
How many years from 1983 to 2024 instead of simple subtraction
let's use this MOD operation.
2024 [ENTER] 1983 [R/S] display answer 41
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Gamo 6/2024
RE: (12C) Modulo Operation - C.Ret - 06-30-2024 11:20 AM
(06-30-2024 05:15 AM)Gamo Wrote: Let's calculate this MOD Operation manually.
example: 1155 MOD 13
1155 [ENTER] 13 ► [ENTER] [ENTER] [-] [R↓] [X<>Y] [LSTx] [÷] [INTG] [x] [-] ► Display Answer 11
May I suggest a slightly shorter alternative solution to use from the ► starting point:
RE: (12C) Modulo Operation - Albert Chan - 06-30-2024 04:30 PM
(07-31-2018 06:10 PM)Albert Chan Wrote: Register Y X --> X Mod(Y, X)
Keep pressing R/S, eventually it display 0, previous Mod was Gcd (Rotate key to get it back)
Code:
; HP-12C Mod Program: Y X --> X Mod(Y, X)
Enter Enter ; Y X X X
- LastX + ; Y Y X X
Rotate ; X Y Y X
/ LastX Swap ; X Y X Y/X
Int * - ; X X X Mod(Y,X)
From my old post, we can have mod get gcd as well