The Museum of HP Calculators


Incomplete Gamma Function for the HP-41C/CV/CX

This program is Copyright © HP and is used here by permission. It was originally printed in the HP-67 High Level Math Solution Book. This program was ported to the HP-41C by reading with the HP-41C card reader and the card reader may be required for operation of this program. This program was entered and uploaded by Tony Duell.

This program is supplied without representation or warranty of any kind. Tony Duell, Hewlett Packard 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.

Documentation Information (CD or source code)
How to get this Program to your Calculator (via HP-IL, disk, wand, and fingers)
Download Binary (.raw) program for disk or PC HP-IL Card download
Download Hexadecimal (.dat) program for Serial Port download

Program Listing

LINE  KEYS
 01 LBL "INGAMMA"
 02 LBL 10
 03 LBL A
 04 STO 01
 05 STOP
 06 LBL 11
 07 LBL B
 08 STO 03
 09 STOP
 10 LBL 14
 11 LBL E
 12 RCL 03
 13 STO 07
 14 0
 15 STO 04
 16 STO 08
 17 1
 18 STO 06
 19 STO 05
 20 CHS
 21 STO 02
 22 LBL 00
 23 RCL 08
 24 1
 25 +
 26 STO 08
 27 RCL 01
 28 -
 29 ENTER
 30 ENTER
 31 RCL 04
 32 *
 33 RCL 05
 34 +
 35 STO 04
 36 X<>Y
 37 RCL 06
 38 *
 39 RCL 07
 40 +
 41 STO 06
 42 0
 43 X=Y?
 44 GTO 09
 45 +
 46 /
 47 LBL 09
 48 STO 02
 49 RCL 08
 50 RCL 05
 51 *
 52 RCL 04
 53 RCL 03
 54 *
 55 +
 56 STO 05
 57 RCL 08
 58 RCL 07
 59 *
 60 RCL 06
 61 RCL 03
 62 *
 63 +
 64 STO 07
 65 0
 66 X=Y?
 67 GTO 00
 68 +
 69 /
 70 RCL 02
 71 X<>Y
 72 STO 02
 73 X#Y?
 74 GTO 00
 75 RCL 03
 76 RCL 01
 77 Y^X
 78 *
 79 RCL 03
 80 CHS
 81 E^X
 82 *
 83 STOP
 84 END

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