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Annotation of OpenXM_contrib/PHC/Ada/Schubert/minor_computations.ads, Revision 1.1.1.1

1.1       maekawa     1: with text_io;                            use text_io;
                      2: with Standard_Integer_Vectors;           use Standard_Integer_Vectors;
                      3: with Standard_Floating_Numbers;          use Standard_Floating_Numbers;
                      4: with Standard_Floating_Matrices;         use Standard_Floating_Matrices;
                      5:
                      6: package Minor_Computations is
                      7:
                      8:   procedure Minors ( file : in file_type;
                      9:                      n,m : in natural; mat : in Matrix );
                     10:
                     11:   -- DESCRIPTION :
                     12:   --   Computes all d-minors of a (nxm)-matrix mat, m < n, for d=2,..,m
                     13:   --   and writes the results on file.
                     14:
                     15:   function Number_of_Minors ( n,m : natural ) return natural;
                     16:
                     17:   -- DESCRIPTION :
                     18:   --   Returns the number of all d-minors of an n-by-m matrix, for d=2,..,m.
                     19:
                     20:   function Sign_of_Minors ( n,m : natural; mat : Matrix ) return Vector;
                     21:
                     22:   -- DESCRIPTION :
                     23:   --   Returns the sign pattern of all minors in the vector on return.
                     24:   --   Every entry of that vector contains either -1, 0, or +1.
                     25:
                     26: end Minor_Computations;