number-precision
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    1.5.1 • Public • Published

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    Perform addition, subtraction, multiplication and division operations precisely using javascript

    Why

    0.1 + 0.2 = 0.30000000000000004
    1.0 - 0.9 = 0.09999999999999998
    0.105.toFixed(2) = 0.1 // not 0.11

    Install

    npm install number-precision --save
    

    Methods

    NP.strip(num)         // strip a number to nearest right number
    NP.plus(num1, num2, num3, ...)   // addition, num + num2 + num3, two numbers is required at least.
    NP.minus(num1, num2, num3, ...)  // subtraction, num1 - num2 - num3
    NP.times(num1, num2, num3, ...)  // multiplication, num1 * num2 * num3
    NP.divide(num1, num2, num3, ...) // division, num1 / num2 / num3
    NP.round(num, ratio)  // round a number based on ratio

    Usage

    import NP from 'number-precision'
    NP.strip(0.09999999999999998); // = 0.1
    NP.plus(0.1, 0.2);             // = 0.3, not 0.30000000000000004
    NP.plus(2.3, 2.4);             // = 4.7, not 4.699999999999999
    NP.minus(1.0, 0.9);            // = 0.1, not 0.09999999999999998
    NP.times(3, 0.3);              // = 0.9, not 0.8999999999999999
    NP.times(0.362, 100);          // = 36.2, not 36.199999999999996
    NP.divide(1.21, 1.1);          // = 1.1, not 1.0999999999999999
    NP.round(0.105, 2);            // = 0.11, not 0.1

    PS: If you want to get rid of XXX is beyond boundary when transfer to integer, the results may not be accurate, use this at the beginning of your app to turn off boundary checking.

    NP.enableBoundaryChecking(false); // default param is true

    License

    MIT

    Install

    npm i number-precision

    DownloadsWeekly Downloads

    12,434

    Version

    1.5.1

    License

    MIT

    Unpacked Size

    63.3 kB

    Total Files

    28

    Last publish

    Collaborators

    • camsong