rearrange_matrix_inplace()

void Chusov::Math::rearrange_matrix_inplace ( ValueType *restrict  column_matrix, std::size_t  columns, std::size_t  rows, const std::size_t *restrict  permutation_indices  )

noexcept

Performs an in-place permutation of columns of a matrix specified by a column-major two-dimensional array with respect to an array of integral indices of the columns.

Template Parameters

ValueType

A type of a matrix element.

Parameters

[in,out]	column_matrix	A pointer to a two dimensional array of elements which represent a column-major matrix to rearrange in place.
	columns	A number of columns in the matrix to rearrange.
	rows	A number of rows in the matrix to rearrange.
[in]	permutation_indices	A pointer to an array of integral indices of columns in column_matrix in the desired order.

Exceptions

Any	exceptions that originate from swapping of two elements of column_matrix.

In order to keep the original matrix intact and construct the result of the permutation in an uninitialized buffer, use rearrange_matrix_copy.

In order to write the result of the buffer and replace some other matrix with the result of the permutation, use rearrange_matrix_copy.