FLA_LU_piv_opt_var5.c File Reference

(r)

Functions
FLA_Error	FLA_LU_piv_opt_var5 (FLA_Obj A, FLA_Obj p)
FLA_Error	FLA_LU_piv_ops_var5 (int m_A, int n_A, float *buff_A, int rs_A, int cs_A, int *buff_p, int inc_p)
FLA_Error	FLA_LU_piv_opd_var5 (int m_A, int n_A, double *buff_A, int rs_A, int cs_A, int *buff_p, int inc_p)
FLA_Error	FLA_LU_piv_opc_var5 (int m_A, int n_A, scomplex *buff_A, int rs_A, int cs_A, int *buff_p, int inc_p)
FLA_Error	FLA_LU_piv_opz_var5 (int m_A, int n_A, dcomplex *buff_A, int rs_A, int cs_A, int *buff_p, int inc_p)

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Function Documentation

FLA_Error FLA_LU_piv_opc_var5	(	int	m_A,
		int	n_A,
		scomplex *	buff_A,
		int	rs_A,
		int	cs_A,
		int *	buff_p,
		int	inc_p
	)

References bl1_camax(), bl1_cger(), bl1_cinvscalv(), BLIS1_NO_CONJUGATE, czero, FLA_Apply_pivots_ln_opc_var1(), FLA_MINUS_ONE, scomplex::imag, and scomplex::real.

Referenced by FLA_LU_piv_opt_var5().

{
  FLA_Error r_val   = FLA_SUCCESS;
  scomplex* buff_m1 = FLA_COMPLEX_PTR( FLA_MINUS_ONE );
  int       min_m_n = min( m_A, n_A );
  int       i;

  for ( i = 0; i < min_m_n; ++i )
  {
    scomplex  pivot_val = czero;
    scomplex* a10t      = buff_A + (0  )*cs_A + (i  )*rs_A;
    scomplex* alpha11   = buff_A + (i  )*cs_A + (i  )*rs_A;
    scomplex* a21       = buff_A + (i  )*cs_A + (i+1)*rs_A;
    scomplex* a12t      = buff_A + (i+1)*cs_A + (i  )*rs_A;
    scomplex* A22       = buff_A + (i+1)*cs_A + (i+1)*rs_A;

    int*      pi1       = buff_p + i*inc_p;

    int       m_ahead   = m_A - i - 1;
    int       n_ahead   = n_A - i - 1;

    /*------------------------------------------------------------*/

    // FLA_Merge_2x1( alpha11,
    //                    a21,      &aB1 );

    // FLA_Amax_external( aB1, pi1 );
    bl1_camax( m_ahead + 1,
               alpha11, rs_A,
               pi1 );

    // If a null pivot is encountered, return the index. 
    pivot_val = *(alpha11 + *pi1);
    if ( pivot_val.real == czero.real &&
         pivot_val.imag == czero.imag )  r_val = ( r_val == FLA_SUCCESS ? i : r_val );
    else 
    {
      // FLA_Merge_1x2( ABL, ABR,      &AB );
      
      // FLA_Apply_pivots( FLA_LEFT, FLA_NO_TRANSPOSE, pi1, AB );
      FLA_Apply_pivots_ln_opc_var1( n_A,
                                    a10t, rs_A, cs_A,
                                    0,
                                    0,
                                    pi1, inc_p );
      
      // FLA_Inv_scal_external( alpha11, a21 );
      bl1_cinvscalv( BLIS1_NO_CONJUGATE,
                     m_ahead,
                     alpha11,
                     a21, rs_A );
    }

    // FLA_Ger_external( FLA_MINUS_ONE, a21, a12t, A22 );
    bl1_cger( BLIS1_NO_CONJUGATE,
              BLIS1_NO_CONJUGATE,
              m_ahead,
              n_ahead,
              buff_m1,
              a21, rs_A,
              a12t, cs_A,
              A22, rs_A, cs_A );

    /*------------------------------------------------------------*/

  }

  return r_val;
}

FLA_Error FLA_LU_piv_opd_var5	(	int	m_A,
		int	n_A,
		double *	buff_A,
		int	rs_A,
		int	cs_A,
		int *	buff_p,
		int	inc_p
	)

References bl1_damax(), bl1_dger(), bl1_dinvscalv(), BLIS1_NO_CONJUGATE, dzero, FLA_Apply_pivots_ln_opd_var1(), and FLA_MINUS_ONE.

Referenced by FLA_LU_piv_opt_var5().

{
  FLA_Error r_val   = FLA_SUCCESS;
  double*   buff_m1 = FLA_DOUBLE_PTR( FLA_MINUS_ONE );
  int       min_m_n = min( m_A, n_A );
  int       i;

  for ( i = 0; i < min_m_n; ++i )
  {
    double    pivot_val = dzero;
    double*   a10t      = buff_A + (0  )*cs_A + (i  )*rs_A;
    double*   alpha11   = buff_A + (i  )*cs_A + (i  )*rs_A;
    double*   a21       = buff_A + (i  )*cs_A + (i+1)*rs_A;
    double*   a12t      = buff_A + (i+1)*cs_A + (i  )*rs_A;
    double*   A22       = buff_A + (i+1)*cs_A + (i+1)*rs_A;

    int*      pi1       = buff_p + i*inc_p;

    int       m_ahead   = m_A - i - 1;
    int       n_ahead   = n_A - i - 1;

    /*------------------------------------------------------------*/

    // FLA_Merge_2x1( alpha11,
    //                    a21,      &aB1 );

    // FLA_Amax_external( aB1, pi1 );
    bl1_damax( m_ahead + 1,
               alpha11, rs_A,
               pi1 );

    // If a null pivot is encountered, return the index. 
    pivot_val = *(alpha11 + *pi1);
    if ( pivot_val == dzero )  r_val = ( r_val == FLA_SUCCESS ? i : r_val );
    else
    {
      // FLA_Merge_1x2( ABL, ABR,      &AB );
      
      // FLA_Apply_pivots( FLA_LEFT, FLA_NO_TRANSPOSE, pi1, AB );
      FLA_Apply_pivots_ln_opd_var1( n_A,
                                    a10t, rs_A, cs_A,
                                    0,
                                    0,
                                    pi1, inc_p );
      
      // FLA_Inv_scal_external( alpha11, a21 );
      bl1_dinvscalv( BLIS1_NO_CONJUGATE,
                     m_ahead,
                     alpha11,
                     a21, rs_A );
    }

    // FLA_Ger_external( FLA_MINUS_ONE, a21, a12t, A22 );
    bl1_dger( BLIS1_NO_CONJUGATE,
              BLIS1_NO_CONJUGATE,
              m_ahead,
              n_ahead,
              buff_m1,
              a21, rs_A,
              a12t, cs_A,
              A22, rs_A, cs_A );

    /*------------------------------------------------------------*/

  }

  return r_val;
}

FLA_Error FLA_LU_piv_ops_var5	(	int	m_A,
		int	n_A,
		float *	buff_A,
		int	rs_A,
		int	cs_A,
		int *	buff_p,
		int	inc_p
	)

References bl1_samax(), bl1_sger(), bl1_sinvscalv(), BLIS1_NO_CONJUGATE, FLA_Apply_pivots_ln_ops_var1(), FLA_MINUS_ONE, and fzero.

Referenced by FLA_LU_piv_opt_var5().

{
  FLA_Error r_val   = FLA_SUCCESS;
  float*    buff_m1 = FLA_FLOAT_PTR( FLA_MINUS_ONE );
  int       min_m_n = min( m_A, n_A );
  int       i;

  for ( i = 0; i < min_m_n; ++i )
  {
    float     pivot_val = fzero;
    float*    a10t      = buff_A + (0  )*cs_A + (i  )*rs_A;
    float*    alpha11   = buff_A + (i  )*cs_A + (i  )*rs_A;
    float*    a21       = buff_A + (i  )*cs_A + (i+1)*rs_A;
    float*    a12t      = buff_A + (i+1)*cs_A + (i  )*rs_A;
    float*    A22       = buff_A + (i+1)*cs_A + (i+1)*rs_A;

    int*      pi1       = buff_p + i*inc_p;

    int       m_ahead   = m_A - i - 1;
    int       n_ahead   = n_A - i - 1;

    /*------------------------------------------------------------*/

    // FLA_Merge_2x1( alpha11,
    //                    a21,      &aB1 );

    // FLA_Amax_external( aB1, pi1 );
    bl1_samax( m_ahead + 1,
               alpha11, rs_A,
               pi1 );

    // If a null pivot is encountered, return the index. 
    pivot_val = *(alpha11 + *pi1);
    if ( pivot_val == fzero )  r_val = ( r_val == FLA_SUCCESS ? i : r_val );
    else
    {
      // FLA_Merge_1x2( ABL, ABR,      &AB );
      
      // FLA_Apply_pivots( FLA_LEFT, FLA_NO_TRANSPOSE, pi1, AB );
      FLA_Apply_pivots_ln_ops_var1( n_A,
                                    a10t, rs_A, cs_A,
                                    0,
                                    0,
                                    pi1, inc_p );
      
      // FLA_Inv_scal_external( alpha11, a21 );
      bl1_sinvscalv( BLIS1_NO_CONJUGATE,
                     m_ahead,
                     alpha11,
                     a21, rs_A );
    }

    // FLA_Ger_external( FLA_MINUS_ONE, a21, a12t, A22 );
    bl1_sger( BLIS1_NO_CONJUGATE,
              BLIS1_NO_CONJUGATE,
              m_ahead,
              n_ahead,
              buff_m1,
              a21, rs_A,
              a12t, cs_A,
              A22, rs_A, cs_A );

    /*------------------------------------------------------------*/

  }

  return r_val;
}

FLA_Error FLA_LU_piv_opt_var5	(	FLA_Obj	A,
		FLA_Obj	p
	)

References FLA_LU_piv_opc_var5(), FLA_LU_piv_opd_var5(), FLA_LU_piv_ops_var5(), FLA_LU_piv_opz_var5(), FLA_Obj_col_stride(), FLA_Obj_datatype(), FLA_Obj_length(), FLA_Obj_row_stride(), FLA_Obj_vector_inc(), and FLA_Obj_width().

Referenced by FLA_LU_piv_internal().

{
  FLA_Error    r_val = FLA_SUCCESS;
  FLA_Datatype datatype;
  int          m_A, n_A;
  int          rs_A, cs_A;
  int          inc_p;

  datatype = FLA_Obj_datatype( A );

  m_A      = FLA_Obj_length( A );
  n_A      = FLA_Obj_width( A );
  rs_A     = FLA_Obj_row_stride( A );
  cs_A     = FLA_Obj_col_stride( A );

  inc_p    = FLA_Obj_vector_inc( p );


  switch ( datatype )
  {
    case FLA_FLOAT:
    {
      float* buff_A = FLA_FLOAT_PTR( A );
      int*   buff_p = FLA_INT_PTR( p );

      r_val = FLA_LU_piv_ops_var5( m_A,
                                   n_A,
                                   buff_A, rs_A, cs_A,
                                   buff_p, inc_p );
      
      break;
    }

    case FLA_DOUBLE:
    {
      double* buff_A = FLA_DOUBLE_PTR( A );
      int*    buff_p = FLA_INT_PTR( p );

      r_val = FLA_LU_piv_opd_var5( m_A,
                                   n_A,
                                   buff_A, rs_A, cs_A,
                                   buff_p, inc_p );

      break;
    }

    case FLA_COMPLEX:
    {
      scomplex* buff_A = FLA_COMPLEX_PTR( A );
      int*      buff_p = FLA_INT_PTR( p );

      r_val = FLA_LU_piv_opc_var5( m_A,
                                   n_A,
                                   buff_A, rs_A, cs_A,
                                   buff_p, inc_p );

      break;
    }

    case FLA_DOUBLE_COMPLEX:
    {
      dcomplex* buff_A = FLA_DOUBLE_COMPLEX_PTR( A );
      int*      buff_p = FLA_INT_PTR( p );

      r_val = FLA_LU_piv_opz_var5( m_A,
                                   n_A,
                                   buff_A, rs_A, cs_A,
                                   buff_p, inc_p );
      
      break;
    }
  }

  return r_val;
}

FLA_Error FLA_LU_piv_opz_var5	(	int	m_A,
		int	n_A,
		dcomplex *	buff_A,
		int	rs_A,
		int	cs_A,
		int *	buff_p,
		int	inc_p
	)

References bl1_zamax(), bl1_zger(), bl1_zinvscalv(), BLIS1_NO_CONJUGATE, FLA_Apply_pivots_ln_opz_var1(), FLA_MINUS_ONE, dcomplex::imag, dcomplex::real, and zzero.

Referenced by FLA_LU_piv_opt_var5().

{
  FLA_Error r_val   = FLA_SUCCESS;
  dcomplex* buff_m1 = FLA_DOUBLE_COMPLEX_PTR( FLA_MINUS_ONE );
  int       min_m_n = min( m_A, n_A );
  int       i;

  for ( i = 0; i < min_m_n; ++i )
  {
    dcomplex  pivot_val = zzero;
    dcomplex* a10t      = buff_A + (0  )*cs_A + (i  )*rs_A;
    dcomplex* alpha11   = buff_A + (i  )*cs_A + (i  )*rs_A;
    dcomplex* a21       = buff_A + (i  )*cs_A + (i+1)*rs_A;
    dcomplex* a12t      = buff_A + (i+1)*cs_A + (i  )*rs_A;
    dcomplex* A22       = buff_A + (i+1)*cs_A + (i+1)*rs_A;

    int*      pi1       = buff_p + i*inc_p;

    int       m_ahead   = m_A - i - 1;
    int       n_ahead   = n_A - i - 1;

    /*------------------------------------------------------------*/

    // FLA_Merge_2x1( alpha11,
    //                    a21,      &aB1 );

    // FLA_Amax_external( aB1, pi1 );
    bl1_zamax( m_ahead + 1,
               alpha11, rs_A,
               pi1 );

    // If a null pivot is encountered, return the index. 
    pivot_val = *(alpha11 + *pi1);
    if ( pivot_val.real == zzero.real &&
         pivot_val.imag == zzero.imag )  r_val = ( r_val == FLA_SUCCESS ? i : r_val );
    else
    {
      // FLA_Merge_1x2( ABL, ABR,      &AB );
      
      // FLA_Apply_pivots( FLA_LEFT, FLA_NO_TRANSPOSE, pi1, AB );
      FLA_Apply_pivots_ln_opz_var1( n_A,
                                    a10t, rs_A, cs_A,
                                    0,
                                    0,
                                    pi1, inc_p );
      
      // FLA_Inv_scal_external( alpha11, a21 );
      bl1_zinvscalv( BLIS1_NO_CONJUGATE,
                     m_ahead,
                     alpha11,
                     a21, rs_A );
    }
    // FLA_Ger_external( FLA_MINUS_ONE, a21, a12t, A22 );
    bl1_zger( BLIS1_NO_CONJUGATE,
              BLIS1_NO_CONJUGATE,
              m_ahead,
              n_ahead,
              buff_m1,
              a21, rs_A,
              a12t, cs_A,
              A22, rs_A, cs_A );

    /*------------------------------------------------------------*/

  }

  return r_val;
}