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Text File | 1992-12-31 | 18.1 KB | 521 lines

A Scientific Calculator ======================= Version 1.07 (1-Jan-93) * If you do not read documentation then please note the * * following ‘key’ (sic) features of this calculator. * * * * Result dragging * * <ALT> rather than <SHIFT> now does simulated input * * Key short cuts ( + translation table) * * Fully algebraic * * Constant operations * * Adjust accesses the inverse function * * Auto detects BASIC 64 and uses the extra precision * * Now with desktop saving! * * Can rename the app with no problem cos uses chkspr * * This app is now well past its FOURTH birthday - * * would users please read the questions near the of * * this document and - perhaps - reply. * Files included in this package :- !Run !Run64 !RunImage !Sprites !Help Templates Sprites messages KeyTable MakeTable chkspr ) my chkspr util, rename the app and see what !Boot ) happens (nothing!), description in Comments. When this scientific calculator application was first written there were no others. Now there are several, including the dreadful Acorn one. I hope you find that this is the best - if not I would appreciate a note! Introduction ------------ The calculator is fully algebraic. [ This means expressions are evaluated using BODMAS order (Brackets, Power, Divide/Multiply, Add/Subtract - where brackets are evaluated first). Hence 2+3*4 is calculated as 2+(3*4) since * has a higher priority - non-algebraic calculators that would evaluate (2+3)*4 ] Also the calculator handles magnitudes greater than 99999999, using 9 digits with scientific notation (9 digits because the tenth digit in BBC BASIC V is generally wrong when doing function calculations) Should this calculator be loaded under BASIC VI the 64 bit floating point BASIC 64 then the extra precision will manifest itself. NOTE BASIC V’s largest number is of the order 1*10^32 precision is about 9 digits BASIC VI’s largest number is of the order 1*10^308 precision is about 14 digits To load !SciCalc under BASIC VI (64bit) you simply need to rename (or delete) the current !Run file and then rename !Run64 to !Run. On top of all this the calculator has a very large range of scientific functions. The range and layout have been inspired by years of Casio calculator use - I’m sorry but TIs are shite! Usage ----- Functions are accessed by using the standard ‘Reverse-Polish’ method used on normal calculators (eg 20 sin rather than sin 20). All functions are listed in the Appendix below. To use a function on the currently displayed number click select on the function name *** The inverse function of a key is available *** *** by clicking ADJUST rather than SELECT *** (ie SELECT for sin, ADJUST for arcsin). Unobvious Adjust functions are:- EXP where SELECT sets the multiplying power of ten and ADJUST gives PI (EXP also gives PI if you have not entered any digits after a clear or equals). rnd where SELECT fixes the display (see menu options below) and ADJUST gives a random number. If an algebraic operation (*/+-^) is clicked on twice then the calculator enters ‘constant’ mode, a ‘K’ lights up in the top left hand corner of the window to signify this. Once in constant mode the selected algebraic operation is repeated with the current register on any entered numbers each time = is clicked (try it and see!). Constant mode is cancelled by AC or entering any other algerbric operation. Clicking on SciCalc’s iconbar sprite or on the calculator’s keys will cause the calculator to claim the caret and then numbers (including hex) can be entered via the keyboard or keypad. Note if numlock is off you will not be able to use the keypad(!). <Escape> will return the caret to its original position. NOTE # is AC, <delete> is C and <SH><del> is AC Memory ------ Memory functions available are :- MR Memory recall Min Memory set to display To clear the memory SELECT clear and then SELECT Min If a number is stored in the memory then the memory indicator (small M in the top left corner) is ‘lit up‘. Menu Options ------------ Option ‘Ascii’ This option has a submenu which displays all the ASCII characters in a window. To place an ascii value of a character in the display icon simply click on that character (clicking with select removes the window, clicking with adjust does not!). The ASCII value of the character will be displayed in the current base in the display icon. Options ‘Deg’, ‘Hex’ and ‘Gra’ To change the current angular measure choose the appropriate item. All angular functions will now operate in this measure and the correct angular measure indicator will ‘light up’. The angular measure may also be set by clicking on the appropriate indicator. Deg has 360 degrees in a circle Rad has 2pi radians in a circle Gra has 400 gradians in a circle Options ‘Dec’, ‘Hex’ and ‘Bin’ To change the current display base choose the appropriate item. ‘Dec’ represents base 10 (the usual one!), ‘Hex’ base 16 and ‘Bin’ base two. The display icon will change to the appropriate base and the correct base indicator will ‘light up‘. The base may also be set by clicking on the appropriate indicator. NOTE: Two new functions become available in Hex or Bin mode << SELECT shifts the bits left, ADJUST right (over/under flow ignored) <O SELECT rotates the bits left, ADJUST rights In base 16 sin, cos, tan, 1/x, log and ln become A, B, C, D, E and F for hex entry. In bases 16 and 2 the following functions cease to work (function!) sin, cos, tan, hyp, root, 1/x, log, ln, rnd, rnd#, EXP. Unavailable options are greyed out. Options ‘Norm’,‘Fix’ and ‘Sci’ To change the method of displaying base ten numbers choose the appropriate item from the appropriate submenu (ie for fix 3 choose ‘3’ from the ‘Fix’ submenu). ‘Fix’ specifies the number of decimal places to be displayed (rounding if necessary) the number if required, ‘Sci’ specifies the number of significant digits past the decimal point under scientific notation (again rounding if necessary). ‘Norm’ unsets the ‘Fix’ and ‘Sci’ choice and returns the display mode to the one chosen by the application as appropriate NOTE: The function ‘rnd’ will set the internal register to the value of the displayed register (ie if you are using Fix 3 to show 3.14159265 the the display is 3.142 and on clicking rnd the register storing 3.14159265 becomes 3.142 so if you choose ‘Norm’ the display is still 3.142). Norm unsets Fix and Sci settings. Result Dragging --------------- The value currently displayed (in the format displayed) can be transferred from !SciCalc to any other application (or the filer) as a textfile. To store the value simply drag the display icon onto the receiving application. The receiving application will treat this as it would when a textfile is dragged onto it. To facilitate this !SciCalc does not claim the caret when you click on the display icon (whereas it does if you click on any other). Sometimes it is either inconvenient or impossible to drag the display icon onto the receiving application (eg a writable icon). The result can be sent as if is was typed in by placing the pointer over the calculator and pressing <ALT>. The <SHIFT> facility is also particularly useful when using !Edit because !Edit does not move the caret to the end of a inserted file, the <SHIFT> facility does this by default. (Note Impression does not have this problem and drags can be done easily.) Appendix 1 - Functions ---------------------- Key Select Adjust ----------------------------------------------------------- ! sin ! Sine (x) ! Arcsine (x) ! ! cos ! Cosine (x) ! Arccosine (x) ! ! tan ! Tangent (x) ! Arctangent (x) ! ! hyp ! Hyperbolic of trig fn ...! ArcHyperbolic trig fn! ! 1/x ! The reciprocal of x ! ! ! log ! Log base 10 (x) ! 10 to the power x ! ! ln ! Log base e (x) ! e to the power x ! ! EXP ! pi or x*10^(entry) ! pi ! ! ! ! x factorial ! ! ! Min ! put x in the memory ! ! ! MR _ ! display the memory ! ! ! € ! the square root of x ! x² ! ! x^y ! x raised to power entry ! x^(1/y) ! ! not ! logical not x ! ! ! and ! logical and x with entry ! ! ! or ! logical or x with entry ! ! ! eor ! logical eor x with entry ! ! ! rnd ! Register set to display ! Random # from 0 to 1 ! ! AC ! Clears all except memory ! ! ! C ! Clears display only ! ! ! +/- ! swaps the sign of x ! ! ! ( ! Open bracket,20 levels ! ! ! ) ! Close bracket ! ! ! << ! Shift bits left ! Shift bits right ! ! <O ! Rotate bits left ! Rotate bits right ! ----------------------------------------------------------- Appendix 2 - System Variable ---------------------------- The system variable <Emm’sSciCalc$Options> is read a run time (and saved with a desktop save). It can contains several modifiers :- -base 10|16|2 (10 = dec, 16 = hex, 2 = bin) -mode 1|2|3 (1 = deg, 2 = rad, 3 = gra) -fix n (n = number of places ) -sci n (n = number of places ) -x n (n = bottom left x coord ) -y n (n = bottom left y coord ) So Set Emm’sSciCalc$Dir -base 16 -mode 2 -sci 3 sets the base to hex, angular measure to radians and will uses scientific notation (3 places) when in decimal mode. Appendix 3 - Key short cuts --------------------------- The following keys are short cuts to their 'iconsakes' :- 0 1 2 3 4 5 6 7 8 9 - + / * = . ( ) (all with SELECT) The following keys are mapped to their 'iconsakes' but WILL work when in base 10. A B C D E F (all with SELECT) The following keys are mapped as such :- Key Icon <Delete> C (with SELECT) <Shift><Delete> AC (with SELECT) # C (with SELECT) < << (with SELECT) > << (with ADJUST) Appendix 4 - Versions --------------------- v1.03 Due to popular appeal (well I did ask for comments!) I have now made the mode buttons act to clicks (fix and sci don't). The divide key has been ‘spriteized’ (cos someone who obviously doesn’t use Latin 1 asked me to). v1.04 Hex input can be in either case (thanks Damon) Fixed the caret claiming bug (for good?) Dragable results (idea from Keith Slone, thanks!) v1.05 ASCII table added When <SHIFT> is pressed the pointer need not be on the display icon. Calculator now starts at its template file position! v1.05b Oh well - so there were a couple bugs that I didn’t check in my hurry to release the 1.05 version (b for bug fix!). Now the window for the ascii table is big enough(!) and mode changes are handled properly (I AM slacking a bit!) v1.06 Well,well,well. I found a bug that has been resident for yonks! (goes to show I actually use it!) - but I fixed it. Now brackets ought to work perfectly. FINALLY implemented constant operations (who noticed it was in the template defn?) Ok, outside stats fns I think I have done all I want to do on this app now. v1.06c Bug fixes again. The constant feature turned on incorrectly (2*3*4 turned it on because there are two *s !). Also clicking on the iconbar sprite claims the caret. This must be it! v1.06d Bug fixes again! Fix and Sci didn’t work properly (ta Mike Smith) & fixed a few niggles I noticed when playing. Changed my help system over to msgtrans (hmm, my system was basically the same, just slower cos in BASIC!). v1.07 Having looked at a semi-working Acorn SciCalc (re RISC OS 3!) made a fair few alterations to mine. Hopefully this app will now be super-stable since the process of compressing the code (much like compilation) reveals any nasty bits! • Gra (Gradians) with display switch (Ta Acorn!) • Shift/Rotate bits in hex and bin modes NOTE: mine work properly - Acorn’s are unintuitive • Added Hyperbolic functions • Added BASIC64 support, auto-detects BASIC VI • Simple alteration when (if) extended precision comes (add new case where exp_size%=4:sig_fig%=18) • Changed system variable root to Emm’sSciCalc to avoid clashes with the, now, more common Acorn one • Added Desktop saving (from Acorn’s code!). I was going to use system variables anyway but along comes RISC OS 3 • Bug fixed Sci (again!) • Spotted (and fixed!) another caret claiming bug • Fixed base changing bug so that the register is not reset when a base change occurs (allows for easy inter-base calculations) • Hex keys now change colour to that of the numbers‘ • Disabled & Greyed any unavailable keys • Removed M+(M-), sacrificed for Hyp key • Key input now not lost but still slow, but faster! [can’t make it much faster, lose the icon flash] • Simulated typing initiated by <ALT> now cos when using <SHIFT> hassel since <SHIFT> is used in day to dad life (this one by request!). • Removed <SHIFT>=ADJUST in key input & replaced it with add &80 onto icon number to click with ADJUST • Tidied up code and compressed it so it still fits into 48k! • THIS MUST BE IT! Comments after 4 years! ----------------------- Yes indeed - this app is now over FOUR YEARS old making it one of the oldest multi-tasking PD RISC OS progs Question - Who has been using it for more than two? (if you have - what are YOUR niggles with it?) Question - Does it look nice? Question - How do you people rate this app to the competition. (Does it need a revamp?) Question - Who uses the ASCII table? No one has ever commented about the key short cuts. Question - Does this mean everyone is happy with them as they are or has someone found a more comprehensive set? Question - Do you really use result dragging - Can I improve the output format? (user defined) Question - More functions? (extra popup key window?) Which? Answers on a postcard(!) or Arcade or maurp@csv.warwick.ac.uk Comments - For advanced users ----------------------------- The file ‘KeyTable’ holds the key translation array, this has been created using the file ‘MakeTable’. This array maps ASCII values to icon numbers. Simply the file holds one byte for every ASCII character from 32 (space) to 94 (^). The byte stores the icon number to be ‘clicked’ if that particular key is pressed. The supplied translation table just translates the numbers and arithmetic operators, if you wish to translate other functions just call up the template in !FormEd, find the icon number for the function, assign the DATA statement on the appropriate line (representing the ASCII code) in ‘MakeTable’ to the icon number. Should you wish the icon to be clicked on by ADJUST rather than SELECT then add &80 to the icon number. Now run the program to create the new table (note ASCII 255 = no translation). The ChkSpr Utility The chkspr utility will, when run, examine the ‘!Sprites’ file and check if the first sprite is the application’s name. If not that sprite’s name will be changed to the application directory’s name. The !Boot file contains ‘Run ChkSpr’, this runs the util, the next line contains ‘IconSprites <Obey$Dir>.!Sprites’ this loads the new sprite in. The filer always calls any new (ie renamed) app’s !Boot file so the new sprite is automatically loaded for display. Please feel free to use the utility separately from the rest of the package but please note that the conditions set out below apply to it. Conditions of Use ----------------- This application is supplied free to everyone ‘as is’, I do not give any guarantee that it is free of bugs, or supply any warranty about its suitability for use. However if there are any problems with it and you notify me of them then I probably will do my best to rectify them. You may give this application to anyone, via any medium, so long as :- 1) It is delivered with ALL the supplied files and unaltered (except !Run & !Boot files) . 2) It is not supplied on a disc you are charging for (except for media and postage costs). You have permission to use any part or the whole application in a project you intend to place in the public domain, as long as I am fully credited. If you wish to use these routines in a program that is for sale (for however much and for whatever reasons) or released as copyright material then my express permission in writing must be obtained. I maintain copyright on all the material supplied and reserve the right to amend these conditions in cases where I deem misuse. A large number of hours of work have gone into the production and maintenance of this application and although I have supplied the application free, donations will be gratefully received (and if over 10 pounds I will send you a disc with updates of this and all other pd stuff I have written. Please include a letter telling me which apps of mine you use and their version numbers). Contacts -------- My address: c/o 6 Parklands Place, Guildford, Surrey GU1 2PS. BBS I call frequently: Arcade BBS [081 654 2212] mbx 23 Email address (the best way to contact me) maurp@csv.warwick.ac.uk © Emmet Spier 1993 - USE and Enjoy!