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Plus42 Changelog

What's new in Plus42 1.1.10

Apr 24, 2024
  • Fixed ALPHA pasting during command entry.
  • Fixed MODES and DISP menus in EQN list view.
  • Equation editor: fixed handling of direct-mapped "%" and "PI".

New in Plus42 1.1.9 (Mar 31, 2024)

  • Now recognizing comment delimiters '@' and ';' for program pasting.
  • More accurate complex ASIN/ASINH.

New in Plus42 1.1.8 (Mar 27, 2024)

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

New in Plus42 1.1.7 (Mar 26, 2024)

  • EDIT and EDITN, when editing lists, would not display the current element
  • index correctly in 1LINE mode. Fixed.

New in Plus42 1.1.6 (Mar 18, 2024)

  • Fixed keyboard mapping bug in the equation editor. This bug was caused by the alternate direct command mapping changes in 1.1.5.

New in Plus42 1.1.5 (Mar 7, 2024)

  • Direct command mapping now supports alternate mappings for ALPHA mode.
  • Fixed source highlighting glitch when tracing N+U in equations.
  • Windows version: Fixed a couple of display glitches.

New in Plus42 1.1.4 (Feb 10, 2024)

  • Keyboard mapping fixes.
  • Android version: Support for external keyboards.
  • Linux version: Changed ALSA device from "plughw:0,0" to "default".

New in Plus42 1.1.3 (Jan 17, 2024)

  • Added C.LN1+X and C.E^X-1 functions. These are complex-capable versions of LN1+X and E^X-1.
  • Binary version: When converting binary to decimal, only use 17 digits when actually needed. This prevents 0.1 from turning into 1.0000000000000001e-1, for example.
  • iOS version: Support for external keyboards.

New in Plus42 1.1.2 (Dec 7, 2023)

  • Fixed a bug that could cause a crash on startup.

New in Plus42 1.1.1 (Dec 1, 2023)

  • CSLD? did not handle intervening XEQ/RTN. Fixed.
  • FUNC did not detect previous FUNC/LNSTK/L4STK. Fixed.

New in Plus42 1.1 (Nov 30, 2023)

  • Full-screen matrix and list editing (EDIT & EDITN)
  • Added option to show LASTX at the top of the stack display area: DISP?LTOP
  • Added option to show ALPHA at the top of the stack display area: DISP?ATOP
  • Added option to show the state of flags 0-10 in the header: DISP?HFLAGS
  • Added option to show an indicator for POLAR mode in the header: DISP?HPOLAR
  • 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.
  • Windows, MacOS, and Linux versions: Keyboard maps now support separate
  • mappings for unshifted and shifted numeric keypad keys, and unshifted and
  • shifted Space.

New in Plus42 1.0.21 (Aug 18, 2023)

  • Added string and list functions to the equation language. The new functions have been added to the FLAGS menu and CATALOG->FCN in the equation editor. List literals have the format {A:B:C}. List elements may be any type, including lists or matrices.
  • Equations: Fixed stack access within matrix literals.
  • Fixed LASTX option in the equation editor's stack menu (R? key).
  • Fixed Y^X with units where X is a negative reciprocal.
  • LIST and LIST? didn't print in TRACE mode. Fixed.

New in Plus42 1.0.20 (Aug 11, 2023)

  • Added 1LINE and NLINE functions, to select 1-line or n-line mode. 1-line mode forces matrices and lists to be displayed in compact format, even if the display has more than 2 lines; n-line mode is the multi-line matrix and list display that was introduced in 1.0.17. The latter remains the default.
  • 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.
  • Added UNIT? to the UNIT.FCN menu.
  • If an error occurs while evaluating an equation, which does not exist in the EQN list, going to EQN mode and pressing R/S will now add the equation to the EQN list, and then start editing with the cursor on the site of the error. This used to work only for equations that were in the EQN list beforehand.
  • Added LASTX for equations, to work alongside REGX/REGY/REGZ/REGT, for read-only access to the RPN stack.
  • 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.)
  • Binary version: max digits for SHOW increased to 17. This was necessary because 16 digits was actually never enough to begin with. For example, 5 1/X and 5 SQRT X^2 1/X both returned a result that looked like 0.2 in SHOW, even though they are different, as can be easily verified with X=Y? or by subtracting them. It takes 17 decimal digits to ensure that different binary numbers will always be rendered as different decimal numbers.

New in Plus42 1.0.19 (May 6, 2023)

  • Fixed the definition of the 'ton' unit (U.S. short ton). It was 10^10 times too large, due to a missing sign in the units definition table.
  • Equations like [1:2:3]=A, when entered without a name, weren't parsed correctly, because the part before the first colon would be incorrectly interpreted as a name. Fixed.
  • When an error occurs while evaluating an equation, and that equation exists
  • in the EQN list, pressing R/S in the EQN list view will now start editing that equation, with the cursor on the part of the equation where the error occurred.

New in Plus42 1.0.18 (Apr 17, 2023)

  • Fixed crash when loading state, when the current program is an equation that is only referenced by SOLVE/INTEG internal variables.
  • Changed S+/S- so that, in NSTK mode, they will accept a single real argument, assuming Y=0 in that case.
  • Added STOP() function for equation debugging.
  • In the equation editor, the named-equation catalog could select items from the wrong row.
  • Fixed handling of LCLV of indexed matrix. It used to leave any pushed indexed matrix in limbo until RTN. With this change, the pushed indexed matrix is popped immediately.
  • Tuned TONE frequencies to A440 scale.

New in Plus42 1.0.17a (Apr 11, 2023)

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

New in Plus42 1.0.17 (Apr 6, 2023)

  • Matrices and lists in the X register are now shown in full, or as much of them as will fit anyway, when the display size is set to more than 2 rows
  • SOLVE in PLOT now provides more informative feedback for Extremum, Sign Reversal, and results from the direct solver
  • 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

New in Plus42 1.0.16 (Mar 18, 2023)

  • 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.
  • Equation editor: now inserts spaces around logical AND, OR, XOR, and NOT.
  • 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.
  • PRP and LIST in TRACE mode now print line numbers for all lines that are
  • targets of GTOL or XEQL, like it already did for LBL lines.
  • Fixed pasting of GTOL and XEQL.

New in Plus42 1.0.15 (Dec 14, 2022)

  • 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) and U+00B7 ('bullet' character used by Emu42).

New in Plus42 1.0.14 (Nov 19, 2022)

  • Added support for new SI prefixes: R (ronna, 10^27), Q (quetta, 10^30), r
  • (ronto, 10^-27), and q (quecto, 10^-30).

New in Plus42 1.0.13 (Nov 13, 2022)

  • Fixed crash with one-arg RADIUS, ANGLE, XCOORD, and YCOORD.

New in Plus42 1.0.12 (Oct 27, 2022)

  • 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.
  • When returning to the equation editor after a parse error, the text could be positioned incorrectly on the screen, and the editor could even crash, in some cases. Fixed.
  • Added Boolean operators to the equation editor's PGM.FCN menu.
  • Made I%YR solver a bit more robust.
  • BASE: complex numbers and numbers with units were displayed in non-decimal bases in some cases.
  • Better HEXM and 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 LINE PLOT.M SPFV SPPV TVM USFV USPV to CATALOG->MISC.
  • >PAR now produces more helpful output in TRACE mode.
  • Windows, Mac, and Linux versions: added Alt-1 through Alt-6 as mappings for the second row of the keyboard.

New in Plus42 1.0.11 (Oct 2, 2022)

  • 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 UBASE and UVAL to the equation parser.
  • PLOT: Fixed coordinate rounding at the top of the display.
  • Raised precedence of _ operator, so expressions like 40000_"km"/1_"d" can now be written without parentheses.
  • The direct solver now converts the solution to match the units of the
  • previous value of the variable being solved for, if it existed already and
  • had compatible units. In all other cases, the variable is overwritten, as
  • before.
  • IOS version: Added Calculator / Print-Out swipe direction configuration
  • option to Preferences.
  • Android, iOS, and MacOS versions: Fixed incorrect Out of Range error returned
  • by BASE functions in certain cases, e.g. BRESET 64 WSIZE 1 ENTER BASE÷
  • The problem is caused by an optimizer bug in the ARM compiler, and does not
  • affect the Windows and Linux versions, nor the MacOS version on Intel.

New in Plus42 1.0.10 (Aug 14, 2022)

  • Fixed crash in PARSE when parsing ITEM(.
  • Fixed (re,im complex pasting. This was broken by localized copy & paste.
  • Special cases for pure real and pure imaginary in SQRT.

New in Plus42 1.0.9 (Jun 19, 2022)

  • GN() didn't evaluate its parameter, and instead consumed the value from level 1. Fixed.
  • Note that this was a code generator bug; any expressions containing SGN() will have to be re-parsed in order to eliminate the effects of this bug.
  • SOLVE in PLOT, when used with a function with X:<STK>, would create an extraneous variable named "". Fixed.

New in Plus42 1.0.8 (Jun 19, 2022)

  • I%YR iteration robustness improvements.
  • Localized Copy & Paste.
  • Fixed handling of invalid number keys in BASE.
  • Setting AMORT->TABLE parameters to 1 initially.
  • Fixed #P parameter check so it doesn't allow 0.
  • iOS and MacOS versions: Fixed skin rendering for iOS 16 and MacOS 13.

New in Plus42 1.0.7 (Jun 11, 2022)

  • Fixed crash in variable catalog.
  • I%YR robustness improvements.

New in Plus42 1.0.6 (Jun 8, 2022)

  • TVM: PMT returned incorrect results in BEGIN mode. Fixed
  • TVM: In some cases, I%YR could return inaccurate results because of poor starting guesses for the iteration. Fixed
  • More accurate complex ACOS and ACOSH
  • Android version: Now removes itself from the task list if exited using OFF

New in Plus42 1.0.4 (May 26, 2022)

  • TVM: Fixed error checks in N.