FLA_QR2_UT_blk_var2.c File Reference

(r)

Functions
FLA_Error	FLA_QR2_UT_blk_var2 (FLA_Obj U, FLA_Obj D, FLA_Obj T, fla_qr2ut_t *cntl)

Function Documentation

FLA_QR2_UT_blk_var2()

FLA_Error FLA_QR2_UT_blk_var2	(	FLA_Obj	U,
		FLA_Obj	D,
		FLA_Obj	T,
		fla_qr2ut_t *	cntl
	)

{
  FLA_Obj DT,              D0,
          DB,              D1,
                           D2;
 
  FLA_Obj TT,              T0,
          TB,              T1,
                           T2;
 
  dim_t b;
 
  FLA_Part_2x1( D,    &DT, 
                      &DB,            0, FLA_TOP );
 
  FLA_Part_2x1( T,    &TT, 
                      &TB,            0, FLA_TOP );
 
  while ( FLA_Obj_length( DT ) < FLA_Obj_length( D ) ){
 
    b = FLA_Determine_blocksize( DB, FLA_BOTTOM, FLA_Cntl_blocksize( cntl ) );
 
    FLA_Repart_2x1_to_3x1( DT,                &D0, 
                        /* ** */            /* ****** */
                                              &D1, 
                           DB,                &D2,        b, FLA_BOTTOM );
 
    FLA_Repart_2x1_to_3x1( TT,                &T0, 
                        /* ** */            /* ****** */
                                              &T1, 
                           TB,                &T2,        b, FLA_BOTTOM );
 
    /*------------------------------------------------------------*/
 
    // [ U, ...
    //   D1, T ] = FLA_QR2_UT( U
    //                         D1, T1 );
 
    FLA_QR2_UT_internal( U,
                         D1, T1, 
                         FLA_Cntl_sub_qr2ut( cntl ) );
 
    /*------------------------------------------------------------*/
 
    FLA_Cont_with_3x1_to_2x1( &DT,                D0, 
                                                  D1, 
                            /* ** */           /* ****** */
                              &DB,                D2,     FLA_TOP );
 
    FLA_Cont_with_3x1_to_2x1( &TT,                T0, 
                                                  T1, 
                            /* ** */           /* ****** */
                              &TB,                T2,     FLA_TOP );
  }
 
  return FLA_SUCCESS;
}

References FLA_Cont_with_3x1_to_2x1(), FLA_Determine_blocksize(), FLA_Obj_length(), FLA_Part_2x1(), FLA_QR2_UT_internal(), FLA_Repart_2x1_to_3x1(), and i.

Referenced by FLA_QR2_UT_internal().