本文整理汇总了C++中arma::Mat::zeros方法的典型用法代码示例。如果您正苦于以下问题：C++ Mat::zeros方法的具体用法？C++ Mat::zeros怎么用？C++ Mat::zeros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arma::Mat的用法示例。
在下文中一共展示了Mat::zeros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: permuteMatToHMatDofs
void HMatrix<ValueType, N>::apply(const arma::Mat<ValueType> &X,
arma::Mat<ValueType> &Y, TransposeMode trans,
ValueType alpha, ValueType beta) const {
if (beta == ValueType(0))
Y.zeros();
else
Y *= beta;
arma::Mat<ValueType> xPermuted;
arma::Mat<ValueType> yPermuted;
if (trans == TransposeMode::NOTRANS) {
xPermuted = permuteMatToHMatDofs(X, COL);
yPermuted = permuteMatToHMatDofs(Y, ROW);
} else {
xPermuted = permuteMatToHMatDofs(X, ROW);
yPermuted = permuteMatToHMatDofs(Y, COL);
}
std::for_each(begin(m_hMatrixData), end(m_hMatrixData),
[trans, alpha, beta, &xPermuted, &yPermuted, this](
const std::pair<shared_ptr<BlockClusterTreeNode<N>>,
shared_ptr<HMatrixData<ValueType>>>
elem) {
IndexRangeType inputRange;
IndexRangeType outputRange;
if (trans == TransposeMode::NOTRANS) {
inputRange = elem.first->data().columnClusterTreeNode->data().indexRange;
outputRange = elem.first->data().rowClusterTreeNode->data().indexRange;
} else {
inputRange = elem.first->data().rowClusterTreeNode->data().indexRange;
outputRange = elem.first->data().columnClusterTreeNode->data().indexRange;
}
arma::subview<ValueType> xData =
xPermuted.rows(inputRange[0], inputRange[1] - 1);
arma::subview<ValueType> yData =
yPermuted.rows(outputRange[0], outputRange[1] - 1);
elem.second->apply(xData, yData, trans, alpha, 1);
});
Y = this->permuteMatToOriginalDofs(yPermuted, ROW);
}