math lingo

Not long ago to do arithmetic modelling of the operation, to use the lingoAnd still have to re-provision the dynamic plan using lingoSo on Baidu found under how to use C + + deployment of lingo, the final result found to be a pitSo I got stuck in it and got two or three cows to figure out that there was a day in the house that didn't sleep ... To bucketHowever, it is clear, but also took a lot of detours, so to write down a little experience, summed u

We sometimes encounter heavy, repetitive work when using lingo, manual operation is obviously time consuming, and the @for function in lingo can only do some simple loops, which requires us to apply the script file to simplify these repetitive work. The English part below is an example from the Official Handbook, which summarizes the 2 points I find useful:1. script file type:. LTF However, the script file

1#include 2#include"Lingd11.h"3 #pragmaComment (lib, "Lingd11.lib")4 using namespacestd;5 6 7 intMain ()8 {9 Charcscript[ -];TenMemset (cScript,0, -*sizeof(Char)); one a Plsenvlingo plingo; -Plingo =lscreateenvlng (); - if(!Plingo) the { -cout"Can ' t create LINGO environment!"endl; - } - DoubleDstatus =1; + intNerror =1; - +Nerror = lsopenlogfilelng (plingo,"Result.log"); a if(nerror) at { -cout"Fail Open log!"endl;

The first step: Enter the target condition and the constraint condition. Each line is separated by semicolons. Then click the Solve button on the toolbar or the Solve submenu under the Lingo menu.Step Two: Check the results in the report.By default, lingo does not perform sensitivity analysis.Need to be configured in lingo to generate a sensitivity analysis repor

Assign values using verbose syntax The logical operators in lingo use the single equal sign "= ". Set Param To Value Put Value Into Param Verbose syntax to assign values more clearly. Case-insensitive Because case-insensitive is case-insensitive, note the comparison of strings. Put"A" = "" -- 1 Case-sensitive Lingo is not sensitive in most cases. Only one case is that the propert

: x (K, J) = 1 ;);! Ensure that no circles exist. @ for (city (I) | I # gt #1: @ for (city (J) | J # gt #1 # and # I # ne # j: u (I)-u (J) + n * x (I, J) 3. maximum short circuit problem Given N point Pi to form a set {Pi}, the distance from any point Pi in the set to another point Pj is represented by Cij. if Pi to Pj is not connected by ARC, cij = positive infinity, Cii = 0, specify an endpoint PN, and the shortest route from Pi to PN is required. Here we use dynamic planning. And

The code solved with lingo is as follows: Model! With lingo to solve the problem of salary distribution, five people each have a different job;Sets:var/1..5/;Link (var,var): c,x;EndsetsDataC= 3 8 2 10 38 7 2) 9 76 4 2) 7 48 4 2) 3 59 10 6 9 10;Enddatamin= @sum (link:c*x);@for (Var (i):@sum (Var (j): X (I,J)) =1);@for (Var (j):@sum (Var (i): x (I,J)) =1);@for (Link: @bin (x));!x11,x12,.., x15,x21,x22,.., x25

Model: sets: Jing/1 .. 20/; out/1 .. 13/; jingout (Jing, out): DAT; Result (Jing, out): X; themin (Jing, out); endsetsdata: DAT = (20*13 data ); enddata @ for (result (I, j): @ Bin (x (I, j )));! Only 0 and 1 @ for (Jing (I): @ sum (result (I, j): X (I, j) = 1) for all elements );! Each patrol point must be assigned a location; @ for (Out (j): @ sum (result (I, j): X (I, j)> = 1 );! Patrol points> = 1 for all exits; @ for (Out (j): @ sum (result (I, j): X (I, j ))

The code solved with lingo is as follows: Model! The steady-state probability distribution of the transfer matrix is obtained.Sets:PROD/1..3/:P;Link (prod,prod): T;EndsetsData:! Transfer matrix;t= 0.368 0 0.6320.368 0.368 0.2640.184 0.368 0.448;Enddata@for (Prod (i):! Remove a redundant constraint;P (i) = @sum (link (j,i):P (j) *t (J,i));@sum (prod:p) = 1;@for (Prod (i):@warn (' The sum of each line of the input matrix must be 1 ',@abs (1-@sum (link

Id = getnettext ("http://www.baidu.com /") -- Getnetbytearray ("http://www.baidu.com ") Put getstreamstatus (ID) Put nettextresult (ID) -_- -------------------------------------------------------------------------------- Netlingo -------------------------------------------------------------------------------- It is used to access the network and obtain the text stream or media stream of the webpage. It can also be used to check whether the Network is available. --

with the customer, After the seal is signed, fax will be sent back to the customer. Before sending an instruction to the warehouse and the slitting factory, the type and quantity of required materials were calculated using a fixed formula with a proportional coefficient. for example, if the width of all products required by the customer is If the value is 99, multiply the order by a proportional coefficient greater than 1, or call it magic number. The universal proportional coefficient, such a

Math. Round (X)Rounding and adding 0.5 rounded downMath. Round (1.5) 2Math. Round (-11.5)-11Math. Round (-11.2)-10Math. Ceil (X)Minimum integer not less than XMath. Ceil (1.5) 2Math. Ceil (-1, 1.5)-1Math. Floor (X)Returns the largest integer less than or equal to X.Math. Floor (5.99) 5Math. Floor (-1, 5.99)-6Math. Random ()Generate random decimal places between 0 and 1Math. Random () * 7 generates random decimals between 0 and 7Math. Random () * 7 + 1

Math is often seen in the code. round, parseint, and math. although the three functions of floor are known to return an integer at the end of the result, the difference between them is still unclear. Today we will make a summary. I. Math. Round Purpose: return the nearest integer. If the fractional part is greater than or equal to 0.5, return the smallest integ

First, let's take a look at The definition of three functions in JavaScript: The Definitive Guide, 4th Edition. Math. ceil (): roundNumber up Arguments: Any numeric value or expression Returns: The closest integer greater than or equalX. Bytes ----------------------------------------------------------------------------------------------- Math. floor (): roundNumber down Arguments: Any numeric value or expre

Public class ceilandfloor { Public static void main (string [] ARGs ){ /* The main task of these two functions is to cut off the digits after decimal places. The difference is that floor always keeps the number smaller, while Ceil always increases the number. In fact, the name can be understood as floor is the floor, and ceil is the ceiling. */ System. out. println ("================= math. floor () ================ "); System. Out. println ("

Math. Round (11.5) returns (long) 12, math. Round (-11.5) returns (long)-11; The math. Round () method adds the parameter 0.5 first and then obtains its math. Floor () value,Math. Floor ()You can obtain the integer part of a number,Mat