multi_index.hpp File Reference

Multi-dimensional indexing utilities. More...

#include <array>
#include <iostream>
#include <vector>

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Classes
class	pfc::MultiIndex< D >
	MultiIndex class for iterating over multi-dimensional indices. More...
class	pfc::MultiIndex< D >::Iterator
	Iterator class for iterating over multi-dimensional indices. More...

Detailed Description

Multi-dimensional indexing utilities.

This file defines the MultiIndex template class for converting between multi-dimensional and linear indices. Essential for:

• Iterating over multi-dimensional arrays
• Converting between (i,j,k) and flat array indices
• Managing index ranges and offsets
• Domain decomposition support

The MultiIndex class handles the mapping between N-dimensional integer coordinates and 1D vector storage.

Usage:

pfc::MultiIndex<3> idx({0, 0, 0}, {64, 64, 64});
size_t linear = idx.to_linear({10, 20, 30});
auto multi = idx.from_linear(linear);

See also

array.hpp for array container using MultiIndex

Author

OpenPFC Contributors

Date

2025