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hzhan0607 / cusp-library

Automatically exported from code.google.com/p/cusp-library
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create cusp::permutation_matrix #33

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
Would store an array of integer indices encoding a permutation of [0,num_rows). 
 Specializing transpose(permutation_matrix,...) and 
multiply(permutation_matrix, ...) for matrix-vector and matrix-matrix 
multiplication would have a noticeable performance advantage.

Questions:
Can permutation_matrix be implemented more concisely as a coo_matrix_view?

Original issue reported on code.google.com by wnbell on 11 Oct 2010 at 4:31