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FLA_LU_nopiv_unb_var5.c File Reference

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Functions

FLA_Error FLA_LU_nopiv_unb_var5 (FLA_Obj A)
 

Function Documentation

◆ FLA_LU_nopiv_unb_var5()

FLA_Error FLA_LU_nopiv_unb_var5 ( FLA_Obj  A)
16 {
17  FLA_Obj ATL, ATR, A00, a01, A02,
18  ABL, ABR, a10t, alpha11, a12t,
19  A20, a21, A22;
20 
21  FLA_Part_2x2( A, &ATL, &ATR,
22  &ABL, &ABR, 0, 0, FLA_TL );
23 
24  while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) &&
25  FLA_Obj_width( ATL ) < FLA_Obj_width( A )){
26 
27  FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &a01, &A02,
28  /* ************* */ /* ************************** */
29  &a10t, /**/ &alpha11, &a12t,
30  ABL, /**/ ABR, &A20, /**/ &a21, &A22,
31  1, 1, FLA_BR );
32 
33  /*------------------------------------------------------------*/
34 
35  // a21 = a21 / alpha11
36  FLA_Inv_scal_external( alpha11, a21 );
37 
38  // A22 = A22 - a21 * a12t
39  FLA_Ger_external( FLA_MINUS_ONE, a21, a12t, A22 );
40 
41  /*------------------------------------------------------------*/
42 
43  FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, a01, /**/ A02,
44  a10t, alpha11, /**/ a12t,
45  /* ************** */ /* ************************ */
46  &ABL, /**/ &ABR, A20, a21, /**/ A22,
47  FLA_TL );
48 
49  }
50 
51  return FLA_SUCCESS;
52 }
FLA_Error FLA_Inv_scal_external(FLA_Obj alpha, FLA_Obj A)
Definition: FLA_Inv_scal_external.c:13
FLA_Error FLA_Ger_external(FLA_Obj alpha, FLA_Obj x, FLA_Obj y, FLA_Obj A)
Definition: FLA_Ger_external.c:13
FLA_Obj FLA_MINUS_ONE
Definition: FLA_Init.c:22
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
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
dim_t FLA_Obj_width(FLA_Obj obj)
Definition: FLA_Query.c:123
dim_t FLA_Obj_length(FLA_Obj obj)
Definition: FLA_Query.c:116
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
Definition: FLA_type_defs.h:159

References FLA_Cont_with_3x3_to_2x2(), FLA_Ger_external(), FLA_Inv_scal_external(), FLA_MINUS_ONE, FLA_Obj_length(), FLA_Obj_width(), FLA_Part_2x2(), and FLA_Repart_2x2_to_3x3().

Referenced by FLA_LU_nopiv_internal().