Collection of permutations operation functions.

void mxPermInv(Perm* px, Perm* out)

Invert permutation -- in situ.

void mxPermMulPerm(Perm* px1, Perm* px2, Perm* out)

Permutation multiplication (composition) -- not in-situ

void mxPermVec(Perm* px, Vec* vec, Vec* out)

Permute vector -- can be in-situ

void mxPermInvVec(Perm* px, Vec* x, Vec* out)

Apply the inverse of px to x, returning the result in out.

void mxTrPerm(Perm* px, int i1, int i2)

Transpose elements of permutation.

void mxPermColsMat(Perm* px, Mat* mat, Mat* out)

Permute columns of matrix A; out = Apx'.

void mxPermRowsMat(Perm* px, Mat* mat, Mat* out)

Permute rows of matrix A; out = pxA.

Documentation

Collection of permutations operation functions. Based on the "Meschach Library", available at the anonymous ftp site thrain.anu.edu.au in the directory pub/meschach.

Author:

David E. Stewart (david.stewart@anu.edu.au) Zbigniew Leyk (zbigniew.leyk@anu.edu.au) Ronan Collobert (collober@idiap.ch)

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