b**l
发帖数: 51 | 1 No Need JNI. try this:
===
/*
* @(#)WinRegistry.java 1.4 03/12/19
*
* Copyright (c) 2004 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
met:
*
* -Redistribution of source code must retain the above copyright notice,
this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduce the above copyright notice,
* th... 阅读全帖 |
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b******n
发帖数: 592 | 2 我有个void *ptr，我现要做
ptr = (ptr + 0xf) & ~0xf
C下面很简单的，一到C++就不行了，value overflow了 |
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t****t
发帖数: 6806 | 3 of course yours won't work.
~0xf (not ~f) is type int (usually 0xfffffff0), then this int is converted
to unsigned long, where sign extension is NOT performed, which gives you (
0x00000000fffffff0), not what you wanted.
In other words, if you used reinterpret_cast, it will work. int->long
will preform sign extension, which converts ~0xf correctly to (
0xfffffffffffffff0).
The type of constant in C is sometimes incorrectly ignored.
I
late |
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j********g
发帖数: 244 | 4 恩 我也觉得是少了一个F，还有就是。。。
就比如说有16个数字要表示啊，需要2个BYTE吧，
0xF/8 是不是等于1， 那数组不该定义成 a[1], 要a[2]才够吧？ |
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v****n
发帖数: 7841 | 5 upgrade到DM 4.2了，过程如下。
1，下载 DS3612xs_3202-Repack.pat ， microserver-dsm-4.2.img ， modules-4.2.
tar.gz
https://drive.google.com/folderview?id=0B5tpWhEINjUONzhFaEgzazU4aEU&usp=
sharing#list
2，卸下所有HDD（多于1块并且用了RAID的话，记录下顺序），连上一块儿没用的HDD在
Disk 1
3，重复lz的说明安装DM 4.2
4，安装完成后，remove刚才的Disk 1，装上原来HDD的第一块儿，注意顺序。
5，启动N40L，打开synology assitant，显示是migratable，右键点击安装，选择新的
DM4.2 pat文见（程序会自动跳过format过程）
6，安装完成开机，看看是否安装成功。
7，成功显示DM4.2以后，关机，装上剩余的HDD
8，再次开机以后，打开Storage Manager，会要求修复剩余盘的System partition，点
击修复。
9，安装完成。
其他的一... 阅读全帖 |
|
v****n
发帖数: 7841 | 6 upgrade到DM 4.2了，过程如下。
1，下载 DS3612xs_3202-Repack.pat ， microserver-dsm-4.2.img ， modules-4.2.
tar.gz
https://drive.google.com/folderview?id=0B5tpWhEINjUONzhFaEgzazU4aEU&usp=
sharing#list
2，卸下所有HDD（多于1块并且用了RAID的话，记录下顺序），连上一块儿没用的HDD在
Disk 1
3，重复lz的说明安装DM 4.2
4，安装完成后，remove刚才的Disk 1，装上原来HDD的第一块儿，注意顺序。
5，启动N40L，打开synology assitant，显示是migratable，右键点击安装，选择新的
DM4.2 pat文见（程序会自动跳过format过程）
6，安装完成开机，看看是否安装成功。
7，成功显示DM4.2以后，关机，装上剩余的HDD
8，再次开机以后，打开Storage Manager，会要求修复剩余盘的System partition，点
击修复。
9，安装完成。
其他的一... 阅读全帖 |
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l***8
发帖数: 149 | 7 int bitCount(short input)
{
input = ((input >> 1) & 0x5555) + (input & 0x5555);
input = ((input >> 2) & 0x3333) + (input & 0x3333);
input = ((input >> 4) & 0x0707) + (input & 0x0707);
return (input >> 8) + (input & 0xf);
}
complexity is O(log(n)) |
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b******n
发帖数: 592 | 8 Sorry, I mis-read traces from my program.
My question is: how to do bit operation on pointers in C++?
I am just trying to adjust pointers by:
ptr &= ~0xf; /* C */
can't seem to do it in C++ |
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b******n
发帖数: 592 | 9 i didn't try 0xful, i tried
reinterpret_cast((reinterpret_cast(ptr)+0xf) & ~f))
give me very strange result. I don't know why this behave differently. Now I
implemented without bit operation and it works. I will try your method late
r and let you know if it works
) |
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b******n
发帖数: 592 | 10 That's why. thanks. I thought 0xf will be long as well.
long |
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k****t
发帖数: 2288 | 11 呵呵，你这个很强。
不过我很好奇的就是这个define会占instruction code的size吗？
我的想法很简单：就是简单，不容易出错，代码的size不增加。。。
比如
#include 。。。。
#define transfer（x） 。。。。
const unsigned char StrA1[] = {0xb,0xc,transfer("ABC")};
const unsigned char StrA2[] = {0xd,0xe,transfer("abcdedfg");
const unsigned char StrA3[] = {0xf,0x10,transfer("test signal");
.... |
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