本文整理汇总了C++中CVariable::sameVarPrevEqu方法的典型用法代码示例。如果您正苦于以下问题：C++ CVariable::sameVarPrevEqu方法的具体用法？C++ CVariable::sameVarPrevEqu怎么用？C++ CVariable::sameVarPrevEqu使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CVariable的用法示例。
在下文中一共展示了CVariable::sameVarPrevEqu方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: excludeVariables
int CEquSystem::excludeVariables(CVariableMapping *pVarValue, int adj, bool exclude, size_t numVar, const CEquArray *pEquations, bool addToAllEquation)
{
// the return value is the number of added mappings
auto iMax = equNumb();
if (!iMax)
return 0; // Empty system of equations
size_t idx;
// The number of variables in the main loop we need to process, BEFORE we will need to go to the next pEquUsed
// (Will be used only when pEquations != NULL)
size_t nVarToProcess = 0;
// Iterating in different orders over the elements from pVarValue
int step = -2;
int jTo = 0;
int jFrom = pVarValue->nElement() << 1;
CEquation *pEquUsed = NULL;
if (!exclude) {
if (pEquations) {
pEquUsed = pEquations->GetAt(idx = pEquations->GetSize() - 1);
nVarToProcess = pEquUsed->numDefinedVar();
}
}
else {
equArray()->RemoveAll(); // reset the array of used equations
pVarValue->setMapBoundaries(numVar ? numVar : pVarValue->nElement());
}
const bool setDefFlag = adj > 0;
bool addVariable = false;
int varDefined = exclude ? 1 : 0;
int nAddedVarTotal = 0;
auto pMapping = pVarValue->getMappingPntr();
bool checkFlg = false;
int retVal;
size_t i = 0;
/*
if (exclude)
{
step = -2;
jTo = 0;
jFrom = pVarValue->nElement() << 1;
} else {
step = 2;
jTo = (pVarValue->nElement() << 1) - 2;
jFrom = numVar? jTo - (numVar << 1) : -2;
}
*/
bool reOrderMapping = false;
for (int j = jFrom; j != jTo && (!numVar || i < numVar); i++) {
j += step;
const auto varIdx = *(pMapping + j);
CVariable *pVar = variable(varIdx);
if (!pVar)
continue; // Variable is not in the system
if (setDefFlag) // we are here to exclude variables and not just to adjust right parts
setVarDefined(varIdx, varDefined); // Mark the variable as defined
// Value of variable - varMin:
const auto varVal = *(pMapping + j + 1);
// For all equations, containing pVar variable
auto pVarCurr = pVar;
do {
CEquation *pEquCurr = equation(pVarCurr);
CVariable *pRemovedVar = NULL;
if (exclude) {
if (!pEquCurr->solved()) {
const size_t nTotal = pVarValue->nElement();
printAddEquationVariable(pEquCurr, varIdx, varVal, false);
/*const auto */retVal = pEquCurr->removeVariable(varVal, varDefinedPtr(), pVarValue, getDefEquationPntr(), adj);
if (retVal == -2) {
// Some equation could not be solved
if (nAddedVarTotal) {
// Some variables got their values here
// We need to add these variables to the equations from which their values were defined
excludeVariables(pVarValue, 1, false, nAddedVarTotal, equArray());
pVarValue->removeLastMapping(nAddedVarTotal);
}
// We need to run this loop over the equations for current varIdx
// and add this variable to all equations where it was just removed
// Define the boundaries for the loop:
auto *pTmp = pVar->sameVarPrevEqu();
pVar = pVarCurr;
pVarCurr = pTmp;
exclude = false;
addVariable = true;
} else
if (retVal >= 0) {
const size_t nAddedVar = pVarValue->nElement() - nTotal;
if (nAddedVar) {
nAddedVarTotal += nAddedVar;
equArray()->Add(pEquCurr);
}
}
//.........这里部分代码省略.........