HP 12C and HP 41C/DM41L: Rounding Numbers
Introduction
The following program rounds positive numbers to the desired decimal amount of places. For example, √3 rounded to 3 places is 1.732. e^2 rounded to 2 places is 7.39.
Set up your stack like this:
Y: number
X: number of decimal places
HP 12C Program: Rounding
Step; Code; Key
01; 1; 1
02; 0; 0
03; 34; x<>y
04; 21; y^x
05; 36; ENTER
06; 33; R↓
07; 20; *
08; 36; ENTER
09; 43,24; FRAC
10; 40; +
11; 43, 25; ITNG
12; 33; R↓
13; 33; R↓
14; 33; R↓
15; 10; ÷
16; 43,33,00; GTO 00
HP 41C Program: Rounding
01 LBL^T ROUND
02 10↑X
03 STO T
04 *
05 ENTER↑
06 FRC
07 +
08 INT
09 R↑
10 /
11 RTN
12 END
Examples:
Round √3 rounded to 3 places
Y: 3, sqrt (√3)
X: 3
Result: 1.732
Round e^2 rounded to 2 places. is 7.39.
Y: 2, e^x (e^2)
X: 2
Result: 7.39
Eddie
All original content copyright, © 2011-2019. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.
Introduction
The following program rounds positive numbers to the desired decimal amount of places. For example, √3 rounded to 3 places is 1.732. e^2 rounded to 2 places is 7.39.
Set up your stack like this:
Y: number
X: number of decimal places
HP 12C Program: Rounding
Step; Code; Key
01; 1; 1
02; 0; 0
03; 34; x<>y
04; 21; y^x
05; 36; ENTER
06; 33; R↓
07; 20; *
08; 36; ENTER
09; 43,24; FRAC
10; 40; +
11; 43, 25; ITNG
12; 33; R↓
13; 33; R↓
14; 33; R↓
15; 10; ÷
16; 43,33,00; GTO 00
HP 41C Program: Rounding
01 LBL^T ROUND
02 10↑X
03 STO T
04 *
05 ENTER↑
06 FRC
07 +
08 INT
09 R↑
10 /
11 RTN
12 END
Examples:
Round √3 rounded to 3 places
Y: 3, sqrt (√3)
X: 3
Result: 1.732
Round e^2 rounded to 2 places. is 7.39.
Y: 2, e^x (e^2)
X: 2
Result: 7.39
Eddie
All original content copyright, © 2011-2019. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.
