Calc - Java Calculator for cell-phones and MIDP devices

Changelog:

Version 4.52, 2, N, 2009-06-15, (124kB)

• Fixed financial ir% solving for difficult input data
• Fixed display of "9.99", FIX 0 (displayed "11")
• Fixed NullPointerException on exit

Version 4.51, 2, N, 2009-04-04, (124kB)

• Fixed lockup when selecting monitor size of "0"
• Fixed display of "0.01" (displayed "0")

Version 4.50, 2, N, 2009-03-11, (124kB)

• Added unit arithmetic
• Added the matrix operations "row_x", "col_x", "a_max", "a_min", "->row", "->col", "->M" and "break up".
• Added the stack operations "move dn#" and "move up#"
• Implemented factorization of numbers up to 2⁶³ and the operations "gcd", "prime?" and "→prime".
• Displaying more than 16 digits for integers less than 2⁶³
• Number, menu and monitor fonts can be chosen independently from both built-in and system fonts.
• Updated scientific constants to the CODATA internationally recommended values of 2006
• Fixed numerous bugs

Version 4.00, 2, N, 2007-02-24, (93kB)

• Added grads as measure of angles, in addition to radians and degrees
• Added program flow operations LBL, GTO, GSB, RTN, STOP, ISG and DSE
• Long-running programs get a "screen saver" view with an option to halt execution
• The old comparison operations x<y?, x<0?, etc. have been reimplemented for more traditional usage. Instead of pushing 0 or 1 on the stack, these operations now skip the next line if the result of the comparison is false. Programs written for a previous verision of Calc that use these operations will not work as intended in this version.
• The source code has been reorganized into a directory structure more suitable for a Java IDE. Project files for the Eclipse Java IDE have been added, enabling development in Windows.

Version 3.03, 2, N, 2006-09-09, (91kB)

• Extra extra large fonts for some devices with big screens
• Fixed HEX mode input for phones without keyRepeated events
• Fixed bug with graph stop/run and zooming

Version 3.02, 2, N, 2006-05-29, (89kB)

• Program editing monitor mode
• 2D surface graph drawing
• Graph drawing stop/run and graph zooming

Version 3.01, 2, N, 2006-01-31, (77kB)

• Workaround for serious bug in phones from Nokia and Siemens
• Cx,y and Px,y for negative numbers
• Added erfc^-1, phi and phi^-1 (not very accurate)

Version 3.00, 2, N, 2005-11-02, (75kB)

• Complex integration and differentiation
• Complex matrices
• Implemented a modified version of the "guess" function from http://sourceforge.net/projects/easycalc
• Help messages for many non-obvious error conditions
• Patches for Nokia and MIDP2
• Optimized floating point library, speedup almost 2x
• Fixed bug where "30 mod 3 = 3" and "30 div 3 = 9"

Version 2.08, 2005-08-29, (64kB)

• Solved some compatibility problems, especially for phones with 64kB limit on class size
• Implemented "y^x" for square matrix Y and integer x

Version 2.07, 2005-06-18, (64kB)

• Numbered axes in graphs
• Added parametric and polar graphs
• Added matrix size query and a_ij element access
• Several minor bugs removed

Version 2.06, 2005-06-13, (64kB)

• Matrix arithmetic and matrix monitoring
• Coord/cplx menu moved to trig/more to make room for matrix menu
• Monitor "editing" mode
• More command key mappings in setup to switch sides of "ENTER" and "+"

Version 2.05, 2005-05-26, (57kB)

• Moved "%" to math/simple and made this menu entry a "repeat" of last command. "int" submenu moved to math/misc
• Fixed "double keypress bug" on Motorola, LG and Sharp phones
• Fixed bug storing complex values in mem

Version 2.04, 2005-04-18, (57kB)

• Added extra large font (I have K700i now...)
• Enabled menu navigation by pointer/stylus input
• First release on SourceForge

Version 2.03, 2005-01-02, (55kB)

• Integration, differentiation, solving and min/max of macro program
• Numbers entered in macro program are stored atomically, not as keyclicks (improves speed and fixes problem with HEX/OCT/BIN mode during programming)
• Fixed programming function "select" to copy the number instead of calculating it when selection criterion x equals 0 or 1. This enables selecting away inf's and nan's.
• Fixed wrong label order in mode/monitor/stat
• Fixed "x↔y" bug when y is empty
• Upgraded compiler tools and cleanup of Real.java

Version 2.01, 2004-09-29, (53kB)

• Added programming utility function "sgn"
• Added room for a total of 9 programs
• Reinstated "date" and "time" on a lower level menu
• Application can be exited from the system menu (problem on K700i)
• Setup settings are reversible by the "reset" command in the system menu
• State is not lost if application is interrupted by incoming phone call

Version 2.00, 2004-09-19, (52kB)

• Simple programmability in the form of command macro
• Extra operations to improve programming
• Graph drawing of macro program
• Added operations for converting between DH.MS format and unix time, Julian Days and Modified Julian Days.
• LASTx remembers its imaginary part on clear stack and exit
• Memory module will no longer be cleared on exit if it contains only pure imaginary numbers
• Statistical results do not inherit imaginary parts from top of stack

Version 1.21, 2004-09-07, (47kB)

• Correct display of largest/smallest number, i.e. 4.197e323228496 and 2.383e-323228497
• ^x√y bug fixed
• 280 mod 4 correctly returns 0 instead of 1.806e-35
• Fixed mixup bug between percentage function and statistics drawing
• Added "conversions and constants" module containing the old "time" module, US/metric conversion constants and scientific constants

Version 1.17

• Added mod and div, rearranged menus slightly to fit
• Added complementary error function, erfc. At worst only 44 bits accurate (i.e. 13 digits, for x=5.44), mostly much better
• Added stack roll-up, roll-down and x↔st#
• More accurate sin, cos, tan for values » 2π
• Fixed accuracy problem of y^x
• Complex versions of trigonometric and power operations
• Bypassing setup dialog (that does not work) on the Z1010

Version 1.15

• Bypassing setup dialogs on known devices (so far: T610, T630 and Z600)
• Support for sub-pixel antialiased fonts when display order is BGR instead of RGB (e.g. Ericsson T630)
• Correct rounding in addition and subtraction routine
• Fixed accuracy problem of e^x and 10^x
• More accurate display of extremely large/small numbers due to accurate 10^x
• 50-70% speedup of all operations due to inlining of small functions

Version 1.13

• Correct rounding in multiplication routine
• More accurate exponential functions due to better multiplications
• atan₂ result correctly converted in DEG mode
• Changed exponent marker from "E" to "e", and hex digits from "abcdef" to "ABCDEF" to improve visibility of complex numbers
• Removed "+" sign from positive exponents
• Basic complex math works for +, -, *, /, +/-, √x, 1/x, x², cplx→r, abs, arg, conj and STO/RCL
• sqrt(-0) correctly returns 0

Version 1.11

• Made "int" submenu accessible in hex/oct/bin mode
• Hex number "1.fffffffffffffffc" correctly displays "2"
• Faster and correctly rounded division routine
• Statistics log (used in "draw") now stores 64 x/y pairs and removes correctly on Σ-
• Using CRC rather than linear congruential generators in random number generator. RNG now passes ent test
• Released Real.java class under GPL

Version 1.08

• Added percent command to basic menu
• Added undo command to stack menu (removed x↔st#)
• atan₂(0,0) correctly returns 0

Version 1.02

• y^x faster and more accurate if x is integer
• Added financial functions y%*x and y%/x
• Added financial mode for beginning and end of month payments
• Financial solving works properly with ir% = 0
• Setup dialog to query about keyboard layout

Version 1.00

• First public version

Todo-list:

• Fix bugs
• Different font for monitor items
• More than one column visible in matrix monitor
• Root finding when f(a)*f(b)>0
• Calling other programs and doing solve, integration and min/max in program