libflame  revision_anchor
Functions
FLA_Trsm_llc_unb_var2.c File Reference

(r)

Functions

FLA_Error FLA_Trsm_llc_unb_var2 (FLA_Diag diagA, FLA_Obj alpha, FLA_Obj A, FLA_Obj B)
 

Function Documentation

◆ FLA_Trsm_llc_unb_var2()

FLA_Error FLA_Trsm_llc_unb_var2 ( FLA_Diag  diagA,
FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  B 
)

References FLA_Cont_with_3x1_to_2x1(), FLA_Cont_with_3x3_to_2x2(), FLA_Gerc_external(), FLA_Inv_scalc_external(), FLA_MINUS_ONE, FLA_Obj_length(), FLA_Part_2x1(), FLA_Part_2x2(), FLA_Repart_2x1_to_3x1(), FLA_Repart_2x2_to_3x3(), and FLA_Scal_external().

Referenced by FLA_Trsm_llc().

16 {
17  FLA_Obj ATL, ATR, A00, a01, A02,
18  ABL, ABR, a10t, alpha11, a12t,
19  A20, a21, A22;
20 
21  FLA_Obj BT, B0,
22  BB, b1t,
23  B2;
24 
25  FLA_Scal_external( alpha, B );
26 
27  FLA_Part_2x2( A, &ATL, &ATR,
28  &ABL, &ABR, 0, 0, FLA_TL );
29 
30  FLA_Part_2x1( B, &BT,
31  &BB, 0, FLA_TOP );
32 
33  while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){
34 
35  FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &a01, &A02,
36  /* ************* */ /* ************************** */
37  &a10t, /**/ &alpha11, &a12t,
38  ABL, /**/ ABR, &A20, /**/ &a21, &A22,
39  1, 1, FLA_BR );
40 
41  FLA_Repart_2x1_to_3x1( BT, &B0,
42  /* ** */ /* *** */
43  &b1t,
44  BB, &B2, 1, FLA_BOTTOM );
45 
46  /*------------------------------------------------------------*/
47 
48  /* b1t = b1t / alpha11 */
49  if ( diagA != FLA_UNIT_DIAG )
50  FLA_Inv_scalc_external( FLA_CONJUGATE, alpha11, b1t );
51 
52  /* B2 = B2 - a21 * b1t */
53  FLA_Gerc_external( FLA_CONJUGATE, FLA_NO_CONJUGATE, FLA_MINUS_ONE, a21, b1t, B2 );
54 
55  /*------------------------------------------------------------*/
56 
57  FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, a01, /**/ A02,
58  a10t, alpha11, /**/ a12t,
59  /* ************** */ /* ************************ */
60  &ABL, /**/ &ABR, A20, a21, /**/ A22,
61  FLA_TL );
62 
63  FLA_Cont_with_3x1_to_2x1( &BT, B0,
64  b1t,
65  /* ** */ /* *** */
66  &BB, B2, FLA_TOP );
67 
68  }
69 
70  return FLA_SUCCESS;
71 }
FLA_Error FLA_Repart_2x1_to_3x1(FLA_Obj AT, FLA_Obj *A0, FLA_Obj *A1, FLA_Obj AB, FLA_Obj *A2, dim_t mb, FLA_Side side)
Definition: FLA_View.c:226
FLA_Obj FLA_MINUS_ONE
Definition: FLA_Init.c:22
FLA_Error FLA_Scal_external(FLA_Obj alpha, FLA_Obj A)
Definition: FLA_Scal_external.c:13
FLA_Error FLA_Repart_2x2_to_3x3(FLA_Obj ATL, FLA_Obj ATR, FLA_Obj *A00, FLA_Obj *A01, FLA_Obj *A02, FLA_Obj *A10, FLA_Obj *A11, FLA_Obj *A12, FLA_Obj ABL, FLA_Obj ABR, FLA_Obj *A20, FLA_Obj *A21, FLA_Obj *A22, dim_t mb, dim_t nb, FLA_Quadrant quadrant)
Definition: FLA_View.c:142
FLA_Error FLA_Cont_with_3x1_to_2x1(FLA_Obj *AT, FLA_Obj A0, FLA_Obj A1, FLA_Obj *AB, FLA_Obj A2, FLA_Side side)
Definition: FLA_View.c:428
FLA_Error FLA_Part_2x2(FLA_Obj A, FLA_Obj *A11, FLA_Obj *A12, FLA_Obj *A21, FLA_Obj *A22, dim_t mb, dim_t nb, FLA_Quadrant quadrant)
Definition: FLA_View.c:17
FLA_Error FLA_Gerc_external(FLA_Conj conjx, FLA_Conj conjy, FLA_Obj alpha, FLA_Obj x, FLA_Obj y, FLA_Obj A)
Definition: FLA_Gerc_external.c:13
Definition: FLA_type_defs.h:158
FLA_Error FLA_Part_2x1(FLA_Obj A, FLA_Obj *A1, FLA_Obj *A2, dim_t mb, FLA_Side side)
Definition: FLA_View.c:76
FLA_Error FLA_Cont_with_3x3_to_2x2(FLA_Obj *ATL, FLA_Obj *ATR, FLA_Obj A00, FLA_Obj A01, FLA_Obj A02, FLA_Obj A10, FLA_Obj A11, FLA_Obj A12, FLA_Obj *ABL, FLA_Obj *ABR, FLA_Obj A20, FLA_Obj A21, FLA_Obj A22, FLA_Quadrant quadrant)
Definition: FLA_View.c:304
dim_t FLA_Obj_length(FLA_Obj obj)
Definition: FLA_Query.c:116
FLA_Error FLA_Inv_scalc_external(FLA_Conj conjalpha, FLA_Obj alpha, FLA_Obj A)
Definition: FLA_Inv_scalc_external.c:13