Free42

Now recognizing comment delimiters '@' and ';' for program pasting.

More accurate complex ASIN/ASINH.

Accuracy improvements for C.LN1+X, and complex LN, ATAN, and ATANH.

Changed the skin loader to remove reliance on a deprecated API.

Direct command mapping now supports alternate mappings for ALPHA mode.

Fixed crash when sharing on iPad.

iPad support

Keyboard mapping fixes.

Support for external keyboards.

Added C.LN1+X and C.E^X-1 functions. These are complex-capable versions of LN1+X and E^X-1.

Fixed pasting of strings that start with E.

Fixed crash when loading skin images with local colormaps, caused by a bug in Xcode 15.

CSLD? did not handle intervening XEQ/RTN. Fixed.

FUNC did not detect previous FUNC/LNSTK/L4STK. Fixed.

In the matrix / list editor (EDIT and EDITN), GOTO would prompt for a column even when editing a list, and any column number other than 1 would cause an error. Lists are one-dimensional, so the user should only be asked for a row. Fixed.

ASSIGN "" didn't work, because the second ENTER wasn't being handled correctly. This was caused by an optimizer bug in Apple's latest compiler. Fixed.

EDIT, EDITN, and INDEX now support editing lists, nested lists, empty lists, and matrices within lists. See the Free42 web site for details.

FUNC now hides the caller's RPN stack, so user-defined functions can use functions like CLST and R↓ without causing side effects.

User-defined functions can now be made to support 'stack lift disable' properly. For functions using FUNC, this happens automatically, and other functions can use the new CSLD? function (Caller's Stack Lift Disabled?).

FNRM and UVEC, when called with very large parameters, could get incorrect results due to overflows in intermediaries. Fixed.

Fixed parameter bounds check in PIXEL.

Added option to use the shake gesture to do CLST in RUN mode.

INPUT would crash if R/S was pressed while the stack was empty, in NSTK mode. Fixed.

ANUM would consider a decimal point or comma by itself as zero, instead of ignoring it. Fixed.

EDIT, EDITN, and INDEX didn't clear flags 76 and 77 (matrix edge wrap and end wrap), while they should. Fixed.

Decimal version: In HMS+ and HMS-, fixed handling of cases where either or both of the arguments has a number of minutes or seconds >= 60. (The binary version did not have this bug.)

Changed Σ+/Σ- so that, in NSTK mode, they will accept a single real argument, assuming Y=0 in that case.

Tuned TONE frequencies to A440 scale.

PRP and Copy (in PRGM mode) were dropping line 01, because of an optimizer bug in the latest compiler. Reduced optimization level from -Os to -O1 to work around this problem.

Fixed crash in RTNERR when switching back to NSTK mode after FUNC/L4STK.

Fixed ASSIGN "" in programs.

Added PRREG to the PRINT menu.

NN→S now ignores the display mode and always acts like ALL mode is active. The idea being that if you care about the display mode, you'll probably be using N→S, and you only need NN→S if you specifically want to see full internal precision.

EDIT, EDITN, and INDEX now support lists, acting like they are 1-column matrices. (Empty lists are not supported, they must have at least one element. This limitation will be removed in a future release. Note that you can create a new 1-element list by simply doing NEWLIST 0 +.)
This includes STOIJ, RCLIJ, STOEL, RCLEL, I+, I-, J+, J-, ←, ↑, ↓, →, INSR, DELR, and DIM.

Added PRREG. Because PRV "REGS" is not a good substitute.

Added NN→S. This works like N→S (convert number to string on the stack), but without the 12-digit mantissa length limit, so you get full precision in ALL mode.

Fixed stack lift handling in DELR and STOFLAG.

Fixed pasting 1/X, 10^X, and 4STK, when pasted without line number and with trailing space.

Fixed a couple of bugs in Paste of scalars in BINM, OCTM, and HEXM modes.

Fixed pasting of U+22A2 and U+22A6 ('append' characters used by i41CX and Emu42).

SOLVE does a better job of reporting Sign Reversal when a function changes sign around a vertical asymptote, instead of reporting it as a root.

BASE: complex numbers displayed in non-decimal bases in some cases.

Better OCTM handling in SHOW.

Fixed number entry in PRGM mode when BINM/OCTM/HEXM active.

No longer setting flag 22 if number entry ends with DROP in NSTK mode.

Added WIDTH and HEIGHT to CATALOG->MISC; moved A...F from CATALOG->MISC to CATALOG->BASE.

Fixed crash in SHOW for certain complex numbers.

Added A...F function. This allows programs to turn on HEXM mode with the A...F menu activated.

Added Calculator / Print-Out swipe direction configuration option to Preferences.

Fixed incorrect Out of Range error returned by BASE functions in certain cases, e.g. BRESET 64 WSIZE 1 ENTER BASE÷

Fixed (re,im) complex pasting. This was broken by localized copy & paste.

Special cases for pure real and pure imaginary in SQRT.

Fixed skin rendering for iOS 16.

Fixed handling of invalid number keys in BINM and OCTM modes.

Localized Copy & Paste.

More accurate complex ACOS and ACOSH.

SOLVE now handles functions that are always positive or always negative a bit better, reporting Extremum when the iteration appears to be bouncing around without improving, instead of continuing indefinitely.

Added XVIEW function. This works like AVIEW, except it takes the string from the X register instead of ALPHA, so it avoids the 44-character length limit.

Implemented LCLV: CLV for local variables only. The regular CLV now works on global variables only.

RND in ALL mode now rounds like in SCI 11, instead of doing nothing.

HEAD, when applied to a string in a numbered register, would corrupt the string if it was 16 characters long before the call. Fixed.

Y^X accuracy improvements with integer X.

Fixed DUPN 2 in 4STK mode. It used to duplicate X into T and Y into Z. DUPN in NSTK mode was not affected by this bug.

Added WIDTH and HEIGHT functions. These always return 131 and 16, respectively; this may not seem very useful, but can be used in programs that are meant to work in both Free42 and Plus42, to allow them to take advantage of the larger display when running in Plus42.

L4STK didn't pad the stack to 4 levels when used without FUNC. Fixed.