------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--           S Y S T E M . G E N E R I C _ C O M P L E X _ B L A S          --
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--                                 S p e c                                  --
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--         Copyright (C) 2006-2009, Free Software Foundation, Inc.          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- You should have received a copy of the GNU General Public License and    --
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-- <http://www.gnu.org/licenses/>.                                          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

--  Package comment required ???

with Ada.Numerics.Generic_Complex_Types;

generic
   type Real is digits <>;
   with package Complex_Types is new Ada.Numerics.Generic_Complex_Types (Real);
   use Complex_Types;

   type Complex_Vector is array (Integer range <>) of Complex;
   type Complex_Matrix is array (Integer range <>, Integer range <>)
      of Complex;
package System.Generic_Complex_BLAS is
   pragma Pure;

   --  Although BLAS support is only available for IEEE single and double
   --  compatible floating-point types, this unit will accept any type
   --  and apply conversions as necessary, with possible loss of
   --  precision and range.

   No_Trans   : aliased constant Character := 'N';
   Trans      : aliased constant Character := 'T';
   Conj_Trans : aliased constant Character := 'C';

   --  BLAS Level 1 Subprograms and Types

   function dot
     (N     : Positive;
      X     : Complex_Vector;
      Inc_X : Integer := 1;
      Y     : Complex_Vector;
      Inc_Y : Integer := 1) return Complex;

   function nrm2
     (N     : Natural;
      X     : Complex_Vector;
      Inc_X : Integer := 1) return Real;

   procedure gemv
     (Trans : access constant Character;
      M     : Natural := 0;
      N     : Natural := 0;
      Alpha : Complex := (1.0, 0.0);
      A     : Complex_Matrix;
      Ld_A  : Positive;
      X     : Complex_Vector;
      Inc_X : Integer := 1;  -- must be non-zero
      Beta  : Complex := (0.0, 0.0);
      Y     : in out Complex_Vector;
      Inc_Y : Integer := 1); -- must be non-zero

   --  BLAS Level 3

   --  gemm   s, d, c, z  Matrix-matrix product of general matrices

   procedure gemm
     (Trans_A : access constant Character;
      Trans_B : access constant Character;
      M       : Positive;
      N       : Positive;
      K       : Positive;
      Alpha   : Complex := (1.0, 0.0);
      A       : Complex_Matrix;
      Ld_A    : Integer;
      B       : Complex_Matrix;
      Ld_B    : Integer;
      Beta    : Complex := (0.0, 0.0);
      C       : in out Complex_Matrix;
      Ld_C    : Integer);

end System.Generic_Complex_BLAS;