Question

什么是执行<条码>的简单公式?

For example, divround(3,2) and divround(5,2) both evaluate to 2.

我写了嵌入式的代码,因此我不能依靠图书馆。我希望该守则对阿拉伯投资机制和国际投资争端解决中心具有通用性,因此也没有任何组装。我试图弄清NumPy(半至晚)的<代码>np.around(a/b)

Answer 1

Assuming a and b are nonnegative, and b is less than INT_MAX / 2, the following is a simple implementation:

int divround(int a, int b)
{
    int q = a / b;
    int r = a % b;

    if (2*r > b) {
        return q + 1;
    } else if (2*r < b) {
        return q;
    } else if (q % 2) {
        return q;
    } else {
        return q + 1;
    }
}

解释:

If the remainder of division is more than half of b round up and if it s less round down.
If the remainder is b/2 exactly, then check if the quotient is even, and if so round down otherwise round up.

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