本文整理汇总了C++中VectorType::AddScale方法的典型用法代码示例。如果您正苦于以下问题：C++ VectorType::AddScale方法的具体用法？C++ VectorType::AddScale怎么用？C++ VectorType::AddScale使用的例子？那么恭喜您, 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VectorType的用法示例。
在下文中一共展示了VectorType::AddScale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: assert
void CR<OperatorType, VectorType, ValueType>::SolvePrecond_(const VectorType &rhs,
VectorType *x) {
LOG_DEBUG(this, "CR::SolvePrecond_()",
" #*# begin");
assert(x != NULL);
assert(x != &rhs);
assert(this->op_ != NULL);
assert(this->precond_ != NULL);
assert(this->build_ == true);
const OperatorType *op = this->op_;
VectorType *r = &this->r_;
VectorType *z = &this->z_;
VectorType *p = &this->p_;
VectorType *q = &this->q_;
VectorType *v = &this->v_;
VectorType *t = &this->t_;
ValueType alpha, beta;
ValueType rho, rho_old;
// initial residual = b - Ax
op->Apply(*x, z);
z->ScaleAdd(ValueType(-1.0), rhs);
// Solve Mr=z
this->precond_->SolveZeroSol(*z, r);
// p = r
p->CopyFrom(*r);
// t = z
t->CopyFrom(*z);
// use for |b-Ax0|
ValueType res_norm = this->Norm(*t);
if (this->iter_ctrl_.InitResidual(paralution_abs(res_norm)) == false) {
LOG_DEBUG(this, "CR::SolvePrecond_()",
" #*# end");
return;
}
// use for |b|
// this->iter_ctrl_.InitResidual(rhs.Norm());
// v=Ar
op->Apply(*r, v);
// rho = (r,v)
rho = r->DotNonConj(*v);
// q=Ap
op->Apply(*p, q);
// Mz=q
this->precond_->SolveZeroSol(*q, z);
// alpha = rho / (q,z)
alpha = rho / q->DotNonConj(*z);
// x = x + alpha * p
x->AddScale(*p, alpha);
// r = r - alpha * z
r->AddScale(*z, ValueType(-1.0)*alpha);
// t = t - alpha * q
t->AddScale(*q, ValueType(-1.0)*alpha);
res_norm = this->Norm(*t);
while (!this->iter_ctrl_.CheckResidual(paralution_abs(res_norm), this->index_)) {
rho_old = rho;
// v=Ar
op->Apply(*r, v);
// rho = (r,v)
rho = r->DotNonConj(*v);
beta = rho / rho_old;
// p = beta*p + r
p->ScaleAdd(beta, *r);
// q = beta*q + v
q->ScaleAdd(beta, *v);
// Mz=q
this->precond_->SolveZeroSol(*q, z);
// alpha = rho / (q,z)
//.........这里部分代码省略.........