RPN-38 CX

January 15, 2024

• Internal optimizations and cleanups. • Modified info screen to avoid clipping by the Dynamic Island.

December 23, 2023

• Runs on Apple Silicon Macs (see notes on homepage cuveesoft.ch) • RPN-38 CX requires iOS 12.0 or later

October 9, 2022

• Fixes a crash when trying to Export a program

September 28, 2022

• Haptics Set the haptic feedback level in the calculator's settings. „Sounds & Haptics“ / „System Haptics“ must be on in the iPhone's settings. • KeyGlow Enable or disable key flashing in the calculator's settings. • Program list view can be dragged down to dismiss it.

April 9, 2022

• Change the program listing font with a simple tap on the new button "F" • Apply a filter to quickly find any program. • Sample Programs may be hidden in the list of programs. Bug fix: • IRR and NPV cash flow calculations produced incorrect results if the group count of the initial investment CF0 was larger than 1.

December 15, 2020

• Improved solving for interest handles extreme cases without iteration error • Address LASTx indirectly via RCi and STi by treating it as register 20 • When executed interactively, ISG and DSE do not change the program counter • CLEAR FIN clears the Compound Interest indicator only when "Use Odd Periods" is off Bug fixes: • Deleting a block of program steps could result in wrongly adjusted branch targets in some cases • ISG/DSE commands were susceptible to internal rounding effects

November 8, 2020

• Print (or mail as PDF) the program or its description • A program running longer than one minute will emit a short beep when executing the final GTO 00 command • Tap f or g, then P/R to see a 12- or 24-hour clock. • Improved accuracy in extreme cases of y^x with positive, integer x. For example, 1.0000001^(2^27) = 674530.4707, not 674530.4760 • New or updated programs: "Trigonometrics", "Gamma Function (Spouge)" • Call up "What's New" anytime from Info screen • Compatibility with iPhone 12 Bug Fixes: • Fixed display issues when using the iPhone in "Zoomed" mode • The RND function didn't work correctly in regions using a comma as decimal point • Double- or triple-tapping the empty program listing could cause a crash. • Setting the haptic feedback level didn't check sufficiently for the correct code

September 2, 2020

• Replaced function π with NOP in top function bar • π is now "g +" • NOP instructions show as LBL if targeted by GTO or GSB • Key flashing may be turned off and on: - Store 19390101 in R1 to turn off - Recall 19390101 from R1 to turn on (Hewlett-Packard Company was founded on Jan 1, 1939) • Haptic feedback may be turned off and on: – Store 1939010X in R0 to set amount of feedback (where X = 0: no feedback, X = 3: maximum feedback)

March 20, 2020

• Register view shows localized formatted value while number is being entered Bug fix: • Using scientific notation could crash the app in some regions, i.e. Australia, Sweden, Slovenia.

January 25, 2020

• Support for iOS 13: Dark Mode, file sharing • Email programs directly from the program list • Replacing registers by pasting a program into the display is now optional • Many under-the-hood optimizations Check out the new Download walk-through on the website (under "Sharing".) Bug fix: • Executing the summation command ∑ with a very large argument would cause a crash RPN-38 CX now requires iOS 11 or later.