Next: Reading and writing permutations, Previous: Permutation functions, Up: Permutations [Index]

- Function:
*int***gsl_permute***(const size_t **`p`, double *`data`, size_t`stride`, size_t`n`) This function applies the permutation

`p`to the array`data`of size`n`with stride`stride`.

- Function:
*int***gsl_permute_inverse***(const size_t **`p`, double *`data`, size_t`stride`, size_t`n`) This function applies the inverse of the permutation

`p`to the array`data`of size`n`with stride`stride`.

- Function:
*int***gsl_permute_vector***(const gsl_permutation **`p`, gsl_vector *`v`) This function applies the permutation

`p`to the elements of the vector`v`, considered as a row-vector acted on by a permutation matrix from the right,*v' = v P*. The*j*-th column of the permutation matrix*P*is given by the-th column of the identity matrix. The permutation`p`_j`p`and the vector`v`must have the same length.

- Function:
*int***gsl_permute_vector_inverse***(const gsl_permutation **`p`, gsl_vector *`v`) This function applies the inverse of the permutation

`p`to the elements of the vector`v`, considered as a row-vector acted on by an inverse permutation matrix from the right,*v' = v P^T*. Note that for permutation matrices the inverse is the same as the transpose. The*j*-th column of the permutation matrix*P*is given by the-th column of the identity matrix. The permutation`p`_j`p`and the vector`v`must have the same length.

- Function:
*int***gsl_permute_matrix***(const gsl_permutation **`p`, gsl_matrix *`A`) This function applies the permutation

`p`to the matrix`A`from the right,*A' = A P*. The*j*-th column of the permutation matrix*P*is given by the-th column of the identity matrix. This effectively permutes the columns of`p`_j`A`according to the permutation`p`, and so the number of columns of`A`must equal the size of the permutation`p`.

- Function:
*int***gsl_permutation_mul***(gsl_permutation **`p`, const gsl_permutation *`pa`, const gsl_permutation *`pb`) This function combines the two permutations

`pa`and`pb`into a single permutation`p`, where. The permutation`p`=`pa`*`pb``p`is equivalent to applying`pb`first and then`pa`.

Next: Reading and writing permutations, Previous: Permutation functions, Up: Permutations [Index]