相关疑难解决方法(0)

为了将字节数组转换为double,我发现了这个:

//convert 8 byte array to double
int start=0;//???
int i = 0;
    int len = 8;
    int cnt = 0;
    byte[] tmp = new byte[len];
    for (i = start; i < (start + len); i++) {
        tmp[cnt] = arr[i];
        //System.out.println(java.lang.Byte.toString(arr[i]) + " " + i);
        cnt++;
    }
    long accum = 0;
    i = 0;
    for ( int shiftBy = 0; shiftBy < 64; shiftBy += 8 ) {
        accum |= ( (long)( tmp[i] & 0xff ) ) << shiftBy; …

如何使用Java的Intel i7 Vector处理器(AVX)？这是一个简单的问题,但答案似乎很难找到.