v0.10.0 - date, time, datetime, timezone, hardware clock

• 0.10.0 (2024-03-31)
  • Bug Fix Fix broken CLRG
    • broke when 'REGS' was replaced by 'RPN83REG'
  • Bug Fix Parse floating numbers equivalent to 0.0 more correctly.
    • The canonical internal representation of 0.0 in TI-OS has an exponent
      value of $80 (i.e. 0), with all mantissa digits set to 0.
    • The previous code set the mantissa digits correctly, but incorrectly
      set the exponent to $7F or some other value depending on the
      position of the decimal point relative to the 0 digits.
    • It made almost no difference because various floating point routines
      seem to canonicalize the exponent to the correct $80 before
      continuing.
    • However, in an upcoming feature, the validation CkPosInt() is called
      before canonicalization can take place, the CkPosInt() returns an
      incorrect result.
    • The fix correctly detects all variations of a 0.0 (e.g. an empty
      string "", "0.0", "000.0", "-000.000E1", "00.00E0") and correctly
      returns the canonical representation of 0.0 which works with
      CkPosInt().
  • Bug Fix Validate data type for STAT functions
    • allow only Real numbers for Sigma+ and Sigma-
  • Bug Fix Validate data type for TVM functions
    • allow only Real numbers for TVM functions
  • Bug Fix Validate data type for % function
    • allow only Real numbers for X and Y
  • Bug Fix Validate data type when storing to ANS upon app exit
    • allow only Real or Complex numbers to stored to ANS
  • Bug Fix Support real arguments for CPLX menu functions (REAL,
    IMAG, CONJ, CABS, CANG)
    • fixes Issue#16
  • RPN83P now consumes 3 flash pages (48 kiB)
  • Verify compatibility with TI-Nspire with TI-84 Plus keyboard
    • works with TI-Nspire with the TI-84 keyboard emulates the Z80
      processor
  • Store and recall TI-OS single-letter variables
    • TI-OS supports 27 single-letter variables (A-Z, Theta) for real and
      complex numbers
    • extend STO, RCL, STO{op}, and RCL{op} to accept a
      single-letter in addition to digits (e.g. STO ALPHA A, RCL+ ALPHA B)
  • Add RNDF, RNDN, RNDG rounding functions
    • RNDF: round to current FIX/SCI/ENG digits
    • RNDN: round to user-specified N digits (0-9)
    • RNDG: round to 10 digits, removing guard digits
  • Change complex number type error to Err:DataType
    • when a function does not accept a complex number, an error message is
      shown
    • change the message from Err:Domain to Err:DataType
  • Add MODE option to invert the behavior of , and 2ND EE button
    • previously, both the , button and 2ND EE button were mapped to
      EE, to make entry of floating point numbers with exponents easier.
    • But the new Date/Time records require the , button for entry.
    • add 2 selectors into MODE menu:
      • ,EE causes the button to behave as labeled (default)
      • EE, inverts the mapping, so that , invokes the EE function,
        and 2ND EE invokes the , function
    • allows the end user to select the most convenient behavior.
  • Update menu compiler and menu routines to support more than 255 items.
    • move most menu routines into Flash Page 1.
  • add date functions
    • date, time, datetime, timezone, and hardware clock
    • add or subtract dates, times, datetimes
    • convert datetime to different timezones
    • convert between datetime and epochseconds
    • support alternate Epoch dates (Unix, NTP, GPS, TIOS, Y2K, custom)
    • set and retrieve datetime from the hardware clock (84+/84+SE only)
    • display time and date objects in RFC 3339 (ISO 8601) format
    • see RPN83P User Guide: DATE
  • increase performance of PRIM (prime factor) function by 40-50%.
    • see RPN83P User Guide: Prime
      Factors
  • update pandoc scripts that convert GitHub flavored Markdown to PDF
    • pandoc was generating images which were 33% too large
    • fixed by using ImageMagick to prescale the images to 75%