text: /*
  
      Copyright (C) 2014, The University of Texas at Austin
  
      This file is part of libflame and is available under the 3-Clause
      BSD license, which can be found in the LICENSE file at the top-level
      directory, or at http://opensource.org/licenses/BSD-3-Clause
  
  */
  
  #include "FLAME.h"
  
  FLA_Error REF_Lyap( FLA_Trans trans, FLA_Obj isgn, FLA_Obj A, FLA_Obj C, FLA_Obj scale )
  {
    if ( FLA_Obj_is( isgn, FLA_MINUS_ONE ) )
      FLA_Scal( FLA_MINUS_ONE, C );
  
    if ( FLA_Obj_is_complex( A ) )
    {
      if ( trans == FLA_NO_TRANSPOSE )
        FLA_Sylv_blk_external( FLA_NO_TRANSPOSE, FLA_CONJ_TRANSPOSE, FLA_ONE, A, A, C, scale );
      else
        FLA_Sylv_blk_external( FLA_CONJ_TRANSPOSE, FLA_NO_TRANSPOSE, FLA_ONE, A, A, C, scale );
    }
    else // if ( FLA_Obj_is_real( A ) )
    {
      if ( trans == FLA_NO_TRANSPOSE )
        FLA_Sylv_blk_external( FLA_NO_TRANSPOSE, FLA_TRANSPOSE, FLA_ONE, A, A, C, scale );
      else
        FLA_Sylv_blk_external( FLA_TRANSPOSE, FLA_NO_TRANSPOSE, FLA_ONE, A, A, C, scale );
    }
  
    return FLA_SUCCESS;
  }
  
  