Trigonometric Functions for the HP-38C/HP-12C
03-25-2016, 09:22 PM (This post was last modified: 03-26-2016 07:25 PM by Gerson W. Barbosa.)
Post: #5
 Gerson W. Barbosa Senior Member Posts: 1,580 Joined: Dec 2013
RE: Trigonometric Functions for the HP-38C/HP-12C
These might give maximum absolute errors around 1.2E-10 and 8.8E-10 for sine and arctangent, respectively:

+1.74532925199433E-02 STO 0
-3.33332558903409E-01 STO 1
+1.99913266300000E-01 STO 2
-1.40254920000000E-01 STO 3
-8.86096146249340E-07 STO 4
+1.34958277500000E-11 STO 5
-9.73259000000000E-17 STO 6

P.S.: I will check the arctangent constants later.

.9999 GTO 39 R/S --> 89.18970856 asin ok
.9999 GTO 46 R/S --> 0.8102914371 acos ok
.9999 GTO 52 R/S --> 44.997(06196)

P.P.S.: These are better:

-0.3333323779 STO 1
0.19987227 STO 2
-0.139705 STO 3

1 GTO 52 R/S --> 45.00000(288)
.9999 GOTO 52 R/S --> 44.99713(794)
.9 GOT0 52 R/S --> 41.98721(134)
 « Next Oldest | Next Newest »

 Messages In This Thread Trigonometric Functions for the HP-38C/HP-12C - bshoring - 03-25-2016, 03:30 AM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-25-2016, 04:51 AM RE: Trigonometric Functions for the HP-38C/HP-12C - tiptongrange - 07-12-2017, 03:17 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 07-12-2017, 05:00 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 07-12-2017, 06:01 PM RE: Trigonometric Functions for the HP-38C/HP-12C - tiptongrange - 07-12-2017, 07:21 PM RE: Trigonometric Functions for the HP-38C/HP-12C - rprosperi - 07-12-2017, 08:04 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Dieter - 07-12-2017, 08:13 PM RE: Trigonometric Functions for the HP-38C/HP-12C - bshoring - 03-25-2016, 02:54 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-25-2016, 03:14 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-25-2016 09:22 PM RE: Trigonometric Functions for the HP-38C/HP-12C - bshoring - 03-26-2016, 08:21 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-26-2016, 09:38 PM RE: Trigonometric Functions for the HP-38C/HP-12C - bshoring - 03-27-2016, 11:50 PM RE: Trigonometric Functions for the HP-38C/HP-12C - bshoring - 03-27-2016, 02:43 AM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-27-2016, 03:08 AM RE: Trigonometric Functions for the HP-38C/HP-12C - bshoring - 03-27-2016, 03:14 AM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-27-2016, 05:04 AM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-27-2016, 11:08 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 03-28-2016, 12:25 AM RE: Trigonometric Functions for the HP-38C/HP-12C - tiptongrange - 07-12-2017, 09:25 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Dieter - 07-12-2017, 09:36 PM RE: Trigonometric Functions for the HP-38C/HP-12C - tiptongrange - 07-12-2017, 10:14 PM RE: Trigonometric Functions for the HP-38C/HP-12C - Gerson W. Barbosa - 07-12-2017, 11:04 PM

User(s) browsing this thread: 1 Guest(s)