Division in Android Gone Wrong Value

Question

When I divided the large number into a small number then the division is correct but when I write the small number to divide a large number the answer returns wrong. In my scenario, the small number always be first. here is my code this code return 7.4074074074074075E-6 but the correct result is 0.0000074074.

    double itf = 0.0;
    double a = 4.0;
    double b = 540000;
    itf = a / b;
    Log.i(TAG, "savedata: outputvalue=" + itf);

Does this answer your question? [Is floating point math broken?](https://stackoverflow.com/questions/588004/is-floating-point-math-broken) — Markus Kauppinen, Mar 12 '21 at 12:55

score 2 · Answer 1 · answered Mar 12 '21 at 13:15

2

BigDecimal a = new BigDecimal("4");
BigDecimal b = new BigDecimal("540000");

// 0.0000074074
a.divide(b, MathContext.DECIMAL128);

You should use a decimal type. double is outside the scope of support

answered Mar 12 '21 at 13:15

Ashton Yoon

172
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Division in Android Gone Wrong Value

1 Answers1