Generalised Fibbonacci Function for the HP-41c

This program is by Paul Dale and is used here by permission.

This program is supplied without representation or warranty of any kind. Paul Dale and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

Overview

This is a generalised version of the Fibbonacci series extended to the entire real domain.

The basic function over the integers is Fn = fn-1 + fn-2, where f0 = 0 and f1 = 1.

Program

01 LBL'FIB
02 5
03 SQRT
04 1
05 +
06 2
07 /
08 X<>Y
09 Y^X
10 LASTX
11 PI
12 *
13 RAD
14 COS
15 DEG
16 RCL Y
17 /
18 -
19 5
20 SQRT
21 /
22 END

Go back to the HP-41 software library
Go back to the general software library
Go back to the main exhibit hall