restrict.cpp

来自「数值计算工具库,C语言编写的,可以直接调用.」· C++ 代码 · 共 25 行

// Numerical C Extensions Group (NCEG) keyword 'restrict'
// BZ_NCEG_RESTRICT

void add(int length, double * restrict a, const double * restrict b,
    const double * restrict c)
{
    for (int i=0; i < length; ++i)
        a[i] = b[i] + c[i];
}

int main()
{
    double a[10], b[10], c[10];
    for (int i=0; i < 10; ++i)
    {
        a[i] = 0.;
        b[i] = 0.;
        c[i] = 0.;
    }

    add(10,a,b,c);
    return 0;
}