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FLA_Syr2k_lt_unb_var5.c File Reference

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Functions

FLA_Error FLA_Syr2k_lt_unb_var5 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C)
 

Function Documentation

◆ FLA_Syr2k_lt_unb_var5()

FLA_Error FLA_Syr2k_lt_unb_var5 ( FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  B,
FLA_Obj  beta,
FLA_Obj  C 
)
16 {
17  FLA_Obj AL, AR, A0, a1, A2;
18 
19  FLA_Obj BL, BR, B0, b1, B2;
20 
21  FLA_Obj CTL, CTR, C00, c01, C02,
22  CBL, CBR, c10t, gamma11, c12t,
23  C20, c21, C22;
24 
25 
26  FLA_Scalr_external( FLA_LOWER_TRIANGULAR, beta, C );
27 
28  FLA_Part_1x2( A, &AL, &AR, 0, FLA_RIGHT );
29 
30  FLA_Part_1x2( B, &BL, &BR, 0, FLA_RIGHT );
31 
32  FLA_Part_2x2( C, &CTL, &CTR,
33  &CBL, &CBR, 0, 0, FLA_BR );
34 
35  while ( FLA_Obj_width( AR ) < FLA_Obj_width( A ) ){
36 
37 
38  FLA_Repart_1x2_to_1x3( AL, /**/ AR, &A0, &a1, /**/ &A2,
39  1, FLA_LEFT );
40 
41  FLA_Repart_1x2_to_1x3( BL, /**/ BR, &B0, &b1, /**/ &B2,
42  1, FLA_LEFT );
43 
44  FLA_Repart_2x2_to_3x3( CTL, /**/ CTR, &C00, &c01, /**/ &C02,
45  &c10t, &gamma11, /**/ &c12t,
46  /* ************* */ /* ************************** */
47  CBL, /**/ CBR, &C20, &c21, /**/ &C22,
48  1, 1, FLA_TL );
49 
50  /*------------------------------------------------------------*/
51 
52  /* c21 = c21 + A2' * b1 */
53  FLA_Gemv_external( FLA_TRANSPOSE, alpha, A2, b1, FLA_ONE, c21 );
54 
55  /* c21 = c21 + B2' * a1 */
56  FLA_Gemv_external( FLA_TRANSPOSE, alpha, B2, a1, FLA_ONE, c21 );
57 
58  /* gamma11 = gamma11 + a1' * b1 + b1' * a1 */
59  FLA_Dot2s_external( alpha, a1, b1, FLA_ONE, gamma11 );
60 
61  /*------------------------------------------------------------*/
62 
63  FLA_Cont_with_1x3_to_1x2( &AL, /**/ &AR, A0, /**/ a1, A2,
64  FLA_RIGHT );
65 
66  FLA_Cont_with_1x3_to_1x2( &BL, /**/ &BR, B0, /**/ b1, B2,
67  FLA_RIGHT );
68 
69  FLA_Cont_with_3x3_to_2x2( &CTL, /**/ &CTR, C00, /**/ c01, C02,
70  /* ************** */ /* ************************ */
71  c10t, /**/ gamma11, c12t,
72  &CBL, /**/ &CBR, C20, /**/ c21, C22,
73  FLA_BR );
74 
75  }
76 
77  return FLA_SUCCESS;
78 }
FLA_Error FLA_Dot2s_external(FLA_Obj alpha, FLA_Obj x, FLA_Obj y, FLA_Obj beta, FLA_Obj rho)
Definition: FLA_Dot2s_external.c:13
FLA_Error FLA_Scalr_external(FLA_Uplo uplo, FLA_Obj alpha, FLA_Obj A)
Definition: FLA_Scalr_external.c:13
FLA_Error FLA_Gemv_external(FLA_Trans transa, FLA_Obj alpha, FLA_Obj A, FLA_Obj x, FLA_Obj beta, FLA_Obj y)
Definition: FLA_Gemv_external.c:13
FLA_Obj FLA_ONE
Definition: FLA_Init.c:18
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
FLA_Error FLA_Cont_with_1x3_to_1x2(FLA_Obj *AL, FLA_Obj *AR, FLA_Obj A0, FLA_Obj A1, FLA_Obj A2, FLA_Side side)
Definition: FLA_View.c:475
dim_t FLA_Obj_width(FLA_Obj obj)
Definition: FLA_Query.c:123
FLA_Error FLA_Part_1x2(FLA_Obj A, FLA_Obj *A1, FLA_Obj *A2, dim_t nb, FLA_Side side)
Definition: FLA_View.c:110
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_Repart_1x2_to_1x3(FLA_Obj AL, FLA_Obj AR, FLA_Obj *A0, FLA_Obj *A1, FLA_Obj *A2, dim_t nb, FLA_Side side)
Definition: FLA_View.c:267
Definition: FLA_type_defs.h:159

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x3_to_2x2(), FLA_Dot2s_external(), FLA_Gemv_external(), FLA_Obj_width(), FLA_ONE, FLA_Part_1x2(), FLA_Part_2x2(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x2_to_3x3(), and FLA_Scalr_external().

Referenced by FLA_Syr2k_lt().