Release 0.4.9 - Complete support for units (All Saints Edition)

[c3d]

This release focuses on support for units, but also adds a large number of other
fixes and improvements.

New features:

• Power-off message indicating low-battery situation (Reduced precision arithmetic is broken #521)
• Add ConvertToUnixPrefix command and SI prefix menu keys (units: Add support for the prefix keys #513)
• Recognize all units that exist in the HP48, and a few more (Complete the list of default units #491)
• UFACT (FactorUnit) command (Unit factorization (UFACT or FactorUnit) #512)
• Unit simplification, e.g. turn 1_m^2*s/s/m into 1_m (Unit simplifications #506)
• Converting unity units to numbers (Remove unit 1 when it appears #502)
• →Unit command (Implement ToUnit #501)
• UnitValue (UVAL) command (Implement UnitValue #493)
• Implement "kibibytes" (KiB) and power-of-two SI prefixes (Units: Add support for kibibyte and the like #492)
• Unit arithmetic (Unit arithmetic #481)
• Add B->R and R->B to BasesMenu (Add B->R and R->B to BasesMenu #488)
• Implement term reordering capability in rewrite (Implement reordering of terms in rewrites #484)
• BaseUnits (UBase) command (Implement UBase (conversion to base units) #483)
• Unit parsing for complex units, e.g. 1_cm^2 (Parse units without quotes #482)
• Unit arithmetic (Unit arithmetic #481) including automatic conversions (Unit conversion #480)
• Convert command (Unit conversion #480)
• Implement the Cycle command for unit objects
• Add Å character for angstroem (The Angstroem unit does not show correctly #477)
• Add Merge state to State system menu (Add 'merge state' to the sysmenu #475)
• Use Unicode font to display the name of a program when executing it (Display name of executing program using larger font #469)
• Allow incremental search to find digits and Unicode (Search does not work in non-alpha mode #468)
• Add tool glyph to user interface font

Bug fixes:

• Do not parse symbols beyond input buffer (Parsing names can extend beyond last character in buffer #524)
• Parse unit menu entries as expressions, not symbols (Converting km/h to mph fails #523)
• Fix reduced-precision arithmetic (Reduced precision arithmetic is broken #521)
• Do not parse empty denominator as zero, e.g. 2/s (Do not emit a Divide by zero error in a bad fraction #520)
• Do not parse a fraction inside a power, e.g. X^2/3 (Do not parse fractions inside power #519)
• Convert fractions to decimal in numeric mode (Automatically convert fractions to decimal in numeric mode #516)
• Do not emit mantissa_error for valid numbers (Do not emit Too many digits error for decimal128 #515)
• Apply negation correctly on unit objects (Negate does not work on unit objects #500)
• Do not emit separator after trailing 0 in integer decimals (Additional spacing before decimal (DB48X-0.4.8 Diplay Issue) #489)
• Do not emit extra spacing before decimal separator (Extra separator space inserted before decimal mark #485)
• Fix stack depth in one error case of evaluate_function()
• Fix display of next/previous icons for large menus (Next / Previous menu key no longer showing up correctly #478)
• Clear settings when loading a state (Reset settings when loading a state #474)
• Fix separators in whole part of decimal numbers when setting is not 3 (Mantissa display with separators set to 2 is wrong #464)
• Parse (sin x)²+(cos x)² correctly, as well as HP67 Mach example (Parsing '(sin X)² + (cos X)²' returns wrong result #427)

Improvements:

• Rename equation as expression (Rename equation to expression #518) and labelText as label_text
• Do not update LastArg except for command line (Do not update LastArgs for internal uses of operators #511)
• ToolsMenu: Connect units to the UnitsConversionMenu (Add UnitsConversionsMenu to ToolsMenu #514)
• Display unit using / and ·, e.g. 1_m·s^2/A (Display units using / and not fancy div #507)
• Show units menu for inverse units as mm⁻¹ (Display mm⁻¹ in UnitsMenu instead of / mm #503)
• Display battery level more accurately, i.e. consider 2.6V "low" (Random reset on 0.4.8 (low battery?) #476)
• No longer acccept empty equations or parentheses, e.g. 1+() (Parsing X' results in some empty object on the stack #487)
• Make StandardDisplay mode obey MinimumSignificantDigits (STO should store at beginning of variables list #462)
• Add algebraic evaluation function for easier evaluation in C++ code
• Reimplement unit type as a derivative of complex (Reimplement units as deriving from complex #471)
• documentation: Use 🟨 and 🟦 for more commands (Put the correct shift labels in the documentation #467)
• Swap Search and Copy commands in EditorMenu (Put Search as a non-shifted function #466)
• STO stores variables at beginning of directory (STO should store at beginning of variables list #462)
• documentation: Add quickstart guide, used for video recording
• documentation: Add links to YouTube videos
• documentation: Add release notes
• documentation: Some typos and other improvements
• documentation: Rework section on keyboard mappings

Signed-off-by: Christophe de Dinechin christophe@dinechin.org

Full Changelog: v0.4.8...v0.4.9

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This discussion was created from the release Release 0.4.9 - Complete support for units (All Saints Edition).