On Wed, Jul 28, 2010 at 11:38 PM, Sergey Bochkanov <sergey.bochka...@alglib.net> wrote: >> My suggestion would be to support Sage vectors and matrices over >> GF(2), RDF, and CDF (machine floats and complex numbers), as well as >> numpy arrays and matrices of appropriate types. > > +1 > > My proposal is to make > * boolean vector/matrix = GF(2), RDF (non-zero = True) > * integer vector/matrix = RDF > * real = RDF > * complex = CDF > >>> because ALGLIB uses Python's list-of-lists to store matrices, and Sage >>> uses its own matrix class. But only several functions from _alglib.py >>> have to be fixed to work with Sage matrices/vectors: >>> * safe_len/safe_cols/safe_rows >>> * is_bool_vector/is_int_vector/is_real_vector/is_complex_vector >>> * is_bool_matrix/is_int_matrix/is_real_matrix/is_complex_matrix >>> * x_from_list/x_from_listlist > > Sorry, I've forgot to add several functions to this list: > * bool_vector_from_x/bool_matrix_from_x > * int_vector_from_x/int_matrix_from_x > * real_vector_from_x/real_matrix_from_x > * complex_vector_from_x/complex_matrix_from_x
But this raises another API question... should bool_matrix_from_x return a matrix over GF(2) or over RDF? (I'll start looking at the Sage -> ALGLIB direction for now.) Carl -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
