i3 1156

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On ARM's C code optimization in embedded development

, this does not mean that the program is running at a speed of arm improvement. In fact, the processor executes the ldm/stm instruction by splitting it into several separate ldr/str instructions. 2.2 Reasonable arrangement of variable orderThe ARM 7 processor requires that the 32-bit/16-bit variable in the ARM program must be aligned in Word/half, which means that if the order of the variables is unreasonable, it can cause a waste of storage space. For example: 4 32-bit int variables in a struct

A simple color-sucking device written by ASP

Absorbing ' ASP Code would run on the server and make HTML Page ' Java Script'll run on Client Side and change the background color ' According to movement of Mouse %> Dim I1, I2, I3 ' looping variables for RGB colorfor I1 = 0 to 3 For I2 = 0 to 3 For I3 = 0 to 3 Color = Hex (I1) Hex (I1) Hex (I2) Hex (I2) Hex (I3) Hex (

Universal Database Display program, can adjust any library, any field, multiple keyword search, automatic paging universal

display succeeds, the return value is true, unsuccessful, and the return value is false. ' Multiple fields, separating ' Query fields must be included in the Display field. ' If the field name is not the same as the name to be displayed, use ' FH display direction is ' H ' for horizontal display, for ' S ' when vertical display is case sensitive FUNCTION Tabdisp (TAB,DISPFILD,FINDFILD,PAGEN,FH) On Error Resume Next IF dispfild= "" THEN dispfild= "*" IF pagen= "" THEN pagen=15 dispfild1=dispfild

Android Development Intent (2)

host is www.fkjava.org, Port is 8888, and path is/mypath to start the activity - DataAndroid:scheme= "Lee"Android:host= "www.fkjava.org"Android:port= "8888"Android:path= "/mypath"/> Intent-filter> Activity> ActivityAndroid:icon= "@drawable/ic_type"Android:name=". Schemehostportpathtypeactivity "Android:label= "Activity to specify scheme, host, port, path, type"> Intent-filter> ActionAndroid:name= "XX"/> categoryAnd

JAVA Memory Management Summary

[] args) {Date d = getDate ();System.out.println ("D =" + D);}private static Date getDate () {Date D2 = new Date ();StringBuffer now = new StringBuffer (d2.tostring ());System.out.println (now);return D2;}(4) Quarantine reference: In this case, the object being reclaimed still has a reference, which is known as the isolated island. If there are two instances, they reference each other, and all other references to both objects are deleted, and no other thread can access either of the two objects.

"Reprint" Java Constant pool

case, a new object is created.40;Integer i2 = new Integer(40);System.out.println(i1==i2);//输出false An example of a richer integerinteger i1 = 40;integer i2 = 40;integer i3 = 0;integer i4 = new Integer (40); Integer i5 = new Integer (40); integer I6 = new Integer (0); System.out.println ( "I1=i2" + (I1 = = i2)); System.out.println ( "I1=i2+i3" + (I1 = = i2 + i3

Delphi Delete Partial string (case insensitive)

TypeTdelflags = set of (Dfdelbefore, dfdelafter);Remove a part of a string that precedes or follows a ENDSTR substring in an MS stringProcedure delstr(var ms:string; endstr:string; Flags:tdelflags;Bself:boolean = True);VarL:integer;BeginL: = Length (ENDSTR);If POS (Ansilowercase (ENDSTR), Ansilowercase (ms)) =0 ThenBeginExitEndIf Dfdelbefore in the Flags thenBeginIf Bself ThenDelete (MS, 1, POS (Ansilowercase (ENDSTR), Ansilowercase (ms)) + L-1)ElseDelete (MS, 1, POS (Ansilowercase (ENDSTR), Ans

C + + Learning (2.3) references

reference reference.The last code int refVal3 = refVal; is actually defined int fefVal = ival in the··Definitions of referencesAllow values. Define multiple references in one statement, each of which must begin with a symbol ; int10242048; //这里定义两个int类型的变量i、i2 int r = i, r2 = i2; //这里r是一个引用, 与i绑定在一起, r2是int类型 int1024, r1 = i3; // i3是int类型, ri是一个引用, 与

Java object and basic data type "= =" Difference

the "= =" Comparison is the address, remember.1. Object. Integer is an objectInteger I1 = 20;integer i2 = 20; System.out.println (I1 = = I2); Trueinteger i3 = 200;integer I4 = 200; System.out.println (i3 = = I4); FalseReason: Integer i1 = 20; is actually an automatic boxing process, the compiler will automatically expand into an Integer i = integer.valueof (20); details can be seen integer.valueof source co

Cracking Excel password protection

Although Excel encryption cannot prevent people who can open it from leaking through copying and other operations, it is at least a good defense line. To remove the password protection for Excel 2013, click "Office" and then "Save as". In the displayed "Save as" dialog box, click "Tools" in the lower left corner, select "general options": the "general options" dialog box is displayed, you can see that, of course, the star number shows the password: Clear the password displayed by this asterisk,

HDU3231 topology Ordering

of the map, topological sorting, ranked in the back of more than 1 units in front of the length of the line.#include #include#include#include#includeusing namespacestd;Const intmaxn=2005;intNminch[3][maxn],val[3][maxn];vectorint>g[3][MAXN];voidinit () { for(intI=0;i3; i++){ for(intj=1; j2; j + +){ inchI [j]=val[i][j]=0; G[i][j].clear (); } } for(intI=0;i3; i++){ for

Considerations for getting the child elements collection of elements in JS

Http://www.cnblogs.com/phonefans/archive/2008/09/04/1283739.html in JS to get the elements of the collection of child elements considerationsCrap less, look directly at the example:1 2 3 4 5 6 Want to use JS to get UL under the four sub-elements, start my code so write:1 var objs = document.getElementsByTagName ("ul") [0].all;2 for (Var i=0;i3 alert (objs[i].innerhtml);4}Test Result: It works in IE and opera, but not in Firefox or Google Chrome. By tr

Section Eighth, variables

3I1 = Raw_input ("yh") variable I1 equals raw_input ("yh"), that is, Raw_input ("yh" ) assigns a value to the variable i1, At this point, if print (i1) Prints the variable i1, it will show YH (either give a value or define a name for a string of characters to understand as a variable) String type: i1 = "Hello China" numeric: i2 = 45678 /span> numeric, variable values are directly numeric, no double quotes "" as

Blue Bridge Cup previous questions nine rearrangement

One Charmp[3][3], gp[3][3]; A intdir[4][2] = {0,1,1,0, -1,0,0,-1}; - Charstr[Ten]; - structnode{ the intx, y; - intStep; - Charcur_mp[3][3];//Recording the current pattern - node () { + } -NodeintXintYintStep) { + This->x =x; A This->y =y; at This->step =Step; - } - }; - Setint>St; -QueueQ; - BOOLCheck (node cur) { in for(intI=0; i3; ++i) - for(intj=0; j3; ++j) to if(Cur.cur_mp

Automatic packing and unpacking

= +; int i0 = +; Integer i1 = +; Integer i2 = +; Integer i3 = 0; Integer i4 = new Integer (+); Integer i5 = new Integer (+); Integer I6 = new Integer (0); Double d1=1.0; Double d2=1.0; System.out.println ("I=i0:" + (i = = I0)); System.out.println ("I1=i2:" + (I1 = = I2)); System.out.println ("I1=i2+

Programmer PC Purchase

Programmer PC Purchase "reprint"Http://www.cnblogs.com/legendtao/p/4631150.htmla good horse with a good saddle , the natural multiplier . A good PC can give you a better work and entertainment experience ~ ~ (lying trough, feeling is soft wen rhythm AH)The author of the company's computer CPU configured for the G series Pentium CPU (G640 2.8GHz), Memory 8g,vs Debug program Every step will delay 2 seconds (Server2003 system), debugging the Turtle speed experience can let me call the police.I reco

The application of Fourier transform in image processing

Original Two-dimensional Fourier transform Inverse transformation Spectrum map original add Gaussian mania add salt and pepper Mania Gaussian noise median filter Salt and pepper Mania median filter Arithmetic mean filtering for Gaussian mania Arithmetic mean filtering for salt and pepper mania 4. Appen

Targeting algorithm analysis

Q: How likely is a design athlete to hit a target with a total of 10 rings and even a 10 ring to hit a 90 ring? Use the default Algorithm Implementation? Analysis: 1) What is the possible score range for each target? If the target has 10 rings, the score can be 1-10 when the target is hit. If the target is not hit, the score is divided into 0. Therefore, the range of each target score is 0-10, which may be 11 in total. 2) the number of possible and most direct calculation methods: Hit 10 targe

VHDL Design-Time parameter definition Method Example

--SPTB LIBRARY IEEE;Use Ieee.std_logic_1164.ALL;Use IEEE. Std_logic_arith. All;Use IEEE. std_logic_unsigned. All;Use Std.textio.all;Use Ieee.std_logic_textio.all;--Uncomment the following library declaration if using--arithmetic functions with signed or Unsigned values--use IEEE.NUMERIC_STD. All;ENTITY ROMTB is--Component Declaration for the Unit under Test (UUT)--generic (Init_0:bit_vector (downto 0): = X "0000");PORT (Do:out std_logic;I0:in std_logic;I1:in std_logic;I2:in std_logic;

The cache for integer

How to get an integer instance based on the integer class:Integer instance=new integer (int value);Integer instance=integer.valueof (int value);The first approach will certainly produce a new instance each time, but the second way is not:1 Public Static voidMain (String[]args) {2Integer i1=integer.valueof (127);3Integer i2=integer.valueof (127);4System.out.println (i1==i2);5 6Integer i3=integer.valueof (128);7Integer i4=integer.valueof (128);

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