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 FLA_Bidiag_UT_u_blf_var2( FLA_Obj A, FLA_Obj TU, FLA_Obj TV )
  {
    FLA_Obj  ATL,   ATR,      A00, A01, A02, 
             ABL,   ABR,      A10, A11, A12,
                              A20, A21, A22;
    FLA_Obj  TUL,   TUR,      TU0, TU1, TU2; 
    FLA_Obj  TVL,   TVR,      TV0, TV1, TV2; 
  
    FLA_Obj  TU1_tl;
    FLA_Obj  TV1_tl;
    FLA_Obj  none, none2, none3;
    dim_t    b_alg, b;
  
    b_alg = FLA_Obj_length( TU );
  
    FLA_Part_2x2( A,    &ATL, &ATR,
                        &ABL, &ABR,   0, 0, FLA_TL );
    FLA_Part_1x2( TU,   &TUL, &TUR,      0, FLA_LEFT ); 
    FLA_Part_1x2( TV,   &TVL, &TVR,      0, FLA_LEFT ); 
  
    while ( FLA_Obj_min_dim( ABR ) > 0 )
    {
      b = min( FLA_Obj_min_dim( ABR ), b_alg );
  
      FLA_Repart_2x2_to_3x3( ATL, /**/ ATR,       &A00, /**/ &A01, &A02,
                          /* ************* */   /* ******************** */
                                                  &A10, /**/ &A11, &A12,
                             ABL, /**/ ABR,       &A20, /**/ &A21, &A22,
                             b, b, FLA_BR );
      FLA_Repart_1x2_to_1x3( TUL, /**/ TUR,       &TU0, /**/ &TU1, &TU2,
                             b, FLA_RIGHT );
      FLA_Repart_1x2_to_1x3( TVL, /**/ TVR,       &TV0, /**/ &TV1, &TV2,
                             b, FLA_RIGHT );
  
      /*------------------------------------------------------------*/
  
      FLA_Part_2x2( TU1,     &TU1_tl, &none,   
                             &none2,  &none3,   b, b, FLA_TL ); 
  
      FLA_Part_2x2( TV1,     &TV1_tl, &none,   
                             &none2,  &none3,   b, b, FLA_TL ); 
  
      // [ ABR, T1 ] = FLA_Bidiag_UT_u_step_unb_var2( ABR, TU1, TV1, b );
      //FLA_Bidiag_UT_u_step_unb_var2( ABR, TU1_tl, TV1_tl );
      FLA_Bidiag_UT_u_step_ofu_var2( ABR, TU1_tl, TV1_tl );
      //FLA_Bidiag_UT_u_step_opt_var2( ABR, TU1_tl, TV1_tl );
  
      /*------------------------------------------------------------*/
  
      FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR,       A00, A01, /**/ A02,
                                                       A10, A11, /**/ A12,
                              /* ************** */  /* ****************** */
                                &ABL, /**/ &ABR,       A20, A21, /**/ A22,
                                FLA_TL );
      FLA_Cont_with_1x3_to_1x2( &TUL, /**/ &TUR,       TU0, TU1, /**/ TU2,
                                FLA_LEFT );
      FLA_Cont_with_1x3_to_1x2( &TVL, /**/ &TVR,       TV0, TV1, /**/ TV2,
                                FLA_LEFT );
    }
  
    return FLA_SUCCESS;
  }
  
  