segmentation fault in scientific computing

1.over stacksize limit 2.big-endian/little-endian 3.different compiler 4.over open files limit 5.source code problem

安卓不能连接到公司WIFI （需要MAC地址注册的WIFI）

 症状： 

已经提供安卓的WIFI的MAC地址给公司注册，并正确注册。但是安卓还是不能连接到公司WIFI。 

原因：

自从安卓10.0版本，随机化MAC功能默认是开启的。即使公司注册了设备的WIFI的MAC地址，但是连接公司WIFI时候，使用的是随机的MAC地址，而不是设备的MAC地址。 

解决方法：

切换"Use randomized MAC"为“ use device MAC”。 

设置 -> 网路和因特网-> 因特网 -> 选择公司WIFI的SSID， 然后在“Privacey”选项下面，点击切换为"use device MAC"。

下图为安卓13.0的设置截图，供参考。

 

Android cannot connect to company WIFI which requires MAC address registration

 Issue: 

Company need device WIFI MAC address to allow WIFI connection. 

Android WIFI MAC is registered to company's database, but still connect to company WIFI. 

Cause:

In Android 10, MAC randomization is enabled by default for client mode, SoftAp, and Wi-Fi Direct. 

Though MAC address is registered, but when connecting to WIFI, Android is using a randomized MAC address instead of the WIFI network card's real MAC address (registered in database). 

Solution:

Turn off "randomized MAC" and use device MAC. 

Settings -> network & Internet -> Internet -> select the Wifi network SSID and switch to "use device MAC" under "Privacy". 

Reference screen shot on Android 13.0.