second step: Matlab main function program
% initialization parameter set clear all;
Close all;
CLC np=20; % population quantity d=2; The dimension of the% variable is g=100; % max Evolutionary algebra f=0.5; % mutation operator cr=0.1; % crossover operator xs=4; % Upper xx=-4; % Lower X=zeros (D,NP); % initial population v=zeros (D,NP); % variant population U=zeros (D,NP); % Select population X=rand (D,NP) * (XS-XX) +xx;
% assigns the initial va
Yesterday my colleague asked me a question, there are two circular statements:
Copy Code code as follows:
for (i = n; i > 0; i--)
{
...
}
for (i = 0; i {
...
}
Why is the former faster than the latter?
My explanation at the time was:
I-the operation itself affects CPSR (the current program State Register), CPSR Common flags have n (result is negative), Z (result is 0), C (with Carry), O (with overflow). I > 0 can be judged directly by the Z-sign.
The i++ o
A. Test topology:
R1------------SW1------------------(mac:2.2.2) R2
|
R3
R1,r2,r3 in VLAN11, R1 connection SW1 interface manually specify the MAC address for the 1.1.1,R2 connection SW1 interface manually specified MAC address is 2.2.2;
The IP address of the R1 interface is 10.1.1.1;
The IP address of the R2 interface is 10.1.1.2;
The IP address of the R3
() to the following structure:
Osstart () invokes Osstarthighrdy () to start the first process.
=============== os_cpu_a.s ====================
osstarthighrdy:
lrw r1,osrunning //Set Osrunning to (1)
movi r2,1
st.b R2, (R1)
BR Osctxswreturn
First set the osrunning variable to 1 to turn on the operating system functions, and then jump to Osctxswreturn.
=============== os_cpu_a.s 137 158 ==================== OSCTXSWRETURN:LRW R1,OSTCBHighRd
Y//Get hig
then define a bool type variable to receive the result;int age1 = 30;int age2 = 20;BOOL age= age1 > age2;printf ("age=%d\n", age);Define three variables, compare three variables, and receive results when defining a bool type variable;int a = 0;int b = 0;int c = 0;printf ("Please enter three variables:");scanf ("%d%d%d", a,b,c);BOOL d = a > B > C;printf ("D =%d\n", d);Greater than or equal to less than equalsBOOL r1 = 5 >= 5;//result is trueprintf ("r1=%d\n", R1);//BOOL r2 = 6 printf ("r2=%d\n",
from router R2 to router 172.16.1.0/24 is the FD of router R1; the overhead of router R1 neighbor R3 to 172.16.1.0/24 is the advertised distance of router R1's AD neighbor ); you can run the show ipvpn 2013 topology command on the routers R1 and R3 to view FD and AD, as shown in Figure 14.23.It can be seen that the AD is equal to FD at this time, so the standby path will not be placed in the OSPF topology
Solve BGP routing Black Hole
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The ospf protocol is run between R2, R3, and R4, and an IBGP neighbor is established between R2, R3, and R4 using a loopback port. Router bgp 100 no synchronization bgp router-id
What shoshould we do when meet a crash in Android?
Original post address: http://leave001.blog.163.com/blog/static/1626912932011226105512484/
Create a crash
For demonstration purpose, I intentionally created a crash in open_sensors_device of libsensors:
Static int open_sensors_device (const struct hw_module_t * module, const char * Name,
Struct hw_device_t ** device)
{
Int status =-einval;
// If our sensor system is ready, commented next line
// Return status;
Char * PTR = 0;
* PTR = 0;
//....
}
Description
These format definitions are used to match the pixel format of the traditional PC's image frame buffer. Each pixel occupies 8, 16, 24, or 32 bits. This is the packed-pixel format, which means that each pixel is in the memory.
When one of these formats is used, the driver should report the color space to v4l2_colorspace_srgb.
Table2-1. Packed RGB image formats
IdentifierCode
Byte 07654/3210
Byte 1
Byte 2
Byte 3
V4l2_pix_fmt_rgb332'Rgb1'
B1 B0 G2
OSPFThe Protocol is required by the customer and is in the following topology. Only the router R3 and R1 and R2 are allowed to establish a neighbor relationship, and the relationship between R1 and R2 is not allowed.
The brief topology is as follows:
OSPF limits the establishment of the FULL Neighbor Relationship-method 1
The advantage of changing the network type of OSPF is that LSA only transmits data on the relevant link and does not pass the data
Address: http://www.myarticlemall.com/Article/Cisco-CCNA-Exam-Tutorial---Troubleshooting-Directly-Connected-Serial-Interfaces/2611
Controllers are the part of the interface that makes the physical connection.
Most important to us is what kind of cable is attathed to a serial interface.
A dte (Data terminating equipment) cable is the normal cable you shoshould use.Being DTE means you have CT the other end to providing clocking.
A dce (Data circuit-terminating equipment) means that this device m
Tags: Cisco router Firewall
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Lab objectives:
1. Configure static routes to achieve network-wide interconnection.
2. R1 can telnet to R3, R4, and R3. The ACL rules are denied and the R4 cannot telnet to R1 and
Vroisis ISIS basic configuration tutorial, vroisis isis basic configuration
Lab content:There are four routers in the network. The IS-IS configured to connect the network. R1 and R2 are L1 routers, Area10 IS a common area, and Area20 IS a backbone area.
Tutorial topology:
Experiment Configuration:
[R1] isis 1[R1-isis-1] is-level-1[R1-isis-1] network-entity 10.20..0000.0001.00[R1-isis-1] inter g0/0/0[R1-GigabitEthernet0/0/0] isis enable 1
[R2] isis 2Create IS-IS process 2[R2-isis-2] is-level-1Co
address 1.1.4, then R1 sends an ARP broadcast to f0/0 to query the MAC address. What if R2 and R3 receive ARP broadcasts? By default, both R2 and R3 enable the proxy ARP. If the local ARP table contains the ARP record of this address, the ARP-replay packet is sent. But on R1, it was found that R1 did not record the mac address of 1.1.4 to the ARP table, but it was discarded. Why? Because R1 will first dete
This blog article describes how to modify the next hop attribute value of NEXT_HOP through BGP, including modifying the next-hop attribute through next-hop-self, use route-map to modify the NEXT_HOP attribute values of BGP routes.
1. You can change the next-hop attribute through next-hop-self.
When R5 is updated to the EBGP neighbor R2 BGP Route 5.5.5.0, NEXT_HOP = 192.168.25.5, this attribute will always follow this BGP Route in AS234, then for R4 and
, find the eligible processes, and finally modify the number of resources available to the system when the process has finished executing;3. Continue to compare the remaining processes and the number of available resources to find the processes that can be implemented below;4. and so on;The following example to explain these obscure words, be sure to take a serious look O (∩_∩) o~"Example" assumes that there are 3 types of mutually exclusive resources R1, R2,
irq_addr DCD os_cpu_arm_exceptirqhndlr fiq_addr DCD OS_CP The code for the U_ARM_EXCEPTFIQHNDLR Interrupt service function OS_CPU_ARM_EXCEPTIRQHNDLR is as follows: Area code, code, READONLY CODE32 os_cpu_arm_except IRQHNDLR SUB LR, LR, #4; Lr Offset to return from this exception:-4. Stmfd sp!, {r0-r12, LR};
Push working registers. MOV R3, LR;
Save Link register. MOV R0, #OS_CPU_ARM_EXCEPT_IRQ B OS_CPU_ARM_EXCEPTHNDLR OS_CPU_ARM_EXCEPTHNDL
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