Easter Sunday Trigs ( rpn38-CX)

[bshoring]

Very nice program. I saved it as "Trigs2.2 (sin in X)".

After playing with it for a while, I decided I still like having sin in Y and cos in X, so I deleted line 30 and updated my instructions. Saved that as "Trigs2.3 (cos in X)".

Since I now have several Trig programs and each has different line numbers to GOTO for ASIN, ACOS & ATAN, I came up with an interesting way to remind myself where they are for a given program, so I don't have to write it down. Since HP financial calculators have special 1-byte registers (0-20) for recording the number of cash flows I decided to use Nj registers 0-2 to store those line numbers. If I forget where ATAN starts, I can just tap the display briefly to bring up the Register View and I can see 31, 42, 50, per the image attached.

I spoke to Willy about the problem with pasting registers to the display. He's aware of the problem and hopes to fix it in the next update of the app. In the meantime, a workaround is to go into SETTINGS (tap the wrench icon) and for the Decimal Point, select the first option "." And then hit SAVE before attempting to paste registers. Then after copying you can always set the decimal point setting to your preference.

I find that I can copy this whole block of constants (I usually do a Clear All first):

R.0: 5.817764173314432e-03
R.1: 0.199999779
R.2: 0.142841665
R.3: 1.107161127e-01
R.4: 0.086263068
R.5: 0.05051923
R.6: 3.2818376136867e-08
R.7: 5.553916059e-14
R.8: 4.4756602e-20
R.9: 2.0935e-26
R0: 0. 31 (ASIN GOTO reminder)
R1: 0. 42 (ACOS GOTO reminder)
R2: 0. 50 (ATAN GOTO reminder)

And when I paste to the display, all of these values go into the desired locations. Even the 31, 42 and 50 go into the Nj registers for 0-2.

Hope it works for you. Makes life a lot easier. After the next app update for RPN-38 CX, it shouldn't matter which decimal point setting you use.