The source code should help figure out any difficult implementations. Sources (C/C++) of existing implementationsĬheck out the fantastic open source calculator SpeedCrunch (need url), or the KDE (KDE 4 is available for Windows) KCalc ( ), Calculator (cleaver name, need url), Qualculate (need url) as well as Galculator or GCalcTool from the GNOME projects, or the GNU bc. While I don't think the complete units program, there are plenty of other useful conversion (and source code!)Ĭonverting from various representations of lat/lon, e.g. Until the US finally moves to the metric system like the rest of the world (perhaps excepting some other Anglophone countries) being able to convert between ounces and milliliters, ounces and pounds, miles and km, inches and feet, inches and cm, feet/yards and meters, etc. Log/LN (and inverse, although these are just 'convenience' for 10ˣ and ℯˣĬonverters between binary, decimal and hex are popular w/ us computer geeks, but I suspect the target audience would not use them much.Ībsolute value is easy to code (square root of x² works pretty well) This does require deciding if you wish to support degrees, radians, or both. environment variables, code generation, and authentication for Mac, Window, and Linux. Parenthesis are also critical for proper function - although you could give an option for prefix (for us Scheme/Lisp types) or postfix/heap (HP's RPN fans)īasic trig (SIN, COS, TAN, SEC) and their 'arc'/inverse (ASIN, ACOS, ATAN, ASEC). SpeedCrunch is a free, fast, high precision open source algebraic. Leftmost page has function list, initial central page is the calculator itself and rightmost page contains some settings. square root of -4 (would be 2 i or signal an error) Translations in Transifex Usage User interface consists three pages. However, the general case of xʸ (where y = ½ for a square root ⅓ for a cube root, etc.) would be more useful.You would have to decide to return error or just show i when dealing w/ irrational numbers, e.g. Many need to square a number (x²) or square root. Having those tests used in most undergraduate "intro to statistics" and perhaps some common non-parametric tests (Kendal, Mann-Witney, etc.) would help justify the need for a Wii as a graduation present. This is something which is NOT done by most calculators, and typically requires figuring out how to do them using a spread sheet. You might also want to think about the ability to store numbers/pairs, so you can do statistical analysis. There is likely an upper limit to the amount of hardcore calculations needed from the Wii UI (in an age of cheap calculators and computers.) But, since you are started down that road, it may be worth getting it to the level where it could satisfy most people (which would require supporting trigonometry, and logarithms). It would likely be useful for several users to add some of the more mundane math/trig functions. 2.3 Sources (C/C++) of existing implementationsĬould you please add a negative button to make negative numbers instead of subtracting from zero and then adding or subtracting from it? Coolhawk0 21:25, 10 February 2010 (UTC).2.2 Unit converters could also be useful.2 It would likely be useful for several users to add some of the more mundane math/trig functions.
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