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FLA_Eig_gest_nu_unb_var4.c File Reference

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FLA_Error FLA_Eig_gest_nu_unb_var4 (FLA_Obj A, FLA_Obj Y, FLA_Obj B)
 

Function Documentation

◆ FLA_Eig_gest_nu_unb_var4()

FLA_Error FLA_Eig_gest_nu_unb_var4 ( FLA_Obj  A,
FLA_Obj  Y,
FLA_Obj  B 
)

References FLA_Axpy_external(), FLA_Cont_with_3x3_to_2x2(), FLA_Copy_external(), FLA_Ger_external(), FLA_Her2c_external(), FLA_Obj_length(), FLA_ONE, FLA_ONE_HALF, FLA_Part_2x2(), FLA_Repart_2x2_to_3x3(), and FLA_Scal_external().

Referenced by FLA_Eig_gest_nu().

16 {
17  FLA_Obj ATL, ATR, A00, a01, A02,
18  ABL, ABR, a10t, alpha11, a12t,
19  A20, a21, A22;
20 
21  FLA_Obj BTL, BTR, B00, b01, B02,
22  BBL, BBR, b10t, beta11, b12t,
23  B20, b21, B22;
24 
25  //FLA_Obj yT, y01,
26  // yB, psi11,
27  // y21;
28 
29  //FLA_Obj y01_l, y01_r;
30 
31  FLA_Obj psi11, y12t,
32  y21, Y22;
33 
34  FLA_Part_2x2( A, &ATL, &ATR,
35  &ABL, &ABR, 0, 0, FLA_TL );
36 
37  FLA_Part_2x2( B, &BTL, &BTR,
38  &BBL, &BBR, 0, 0, FLA_TL );
39 
40  //FLA_Part_2x1( Y, &yT,
41  // &yB, 0, FLA_TOP );
42 
43  FLA_Part_2x2( Y, &psi11, &y12t,
44  &y21, &Y22, 1, 1, FLA_TL );
45 
46  while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){
47 
48  FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &a01, &A02,
49  /* ************* */ /* ************************** */
50  &a10t, /**/ &alpha11, &a12t,
51  ABL, /**/ ABR, &A20, /**/ &a21, &A22,
52  1, 1, FLA_BR );
53 
54  FLA_Repart_2x2_to_3x3( BTL, /**/ BTR, &B00, /**/ &b01, &B02,
55  /* ************* */ /* ************************* */
56  &b10t, /**/ &beta11, &b12t,
57  BBL, /**/ BBR, &B20, /**/ &b21, &B22,
58  1, 1, FLA_BR );
59 
60  //FLA_Repart_2x1_to_3x1( yT, &y01,
61  // /* ** */ /* ***** */
62  // &psi11,
63  // yB, &y21, 1, FLA_BOTTOM );
64 
65  /*------------------------------------------------------------*/
66 
67  //FLA_Part_1x2( y01, &y01_l, &y01_r, 1, FLA_LEFT );
68 
69  //// y01 = b01 * alpha11;
70  //FLA_Copy_external( b01, y01_l );
71  //FLA_Scal_external( alpha11, y01_l );
72  // psi11 = 1/2 * alpha11;
73  FLA_Copy_external( alpha11, psi11 );
75 
76  //// a01 = a01 + 1/2 * y01;
77  //FLA_Axpy_external( FLA_ONE_HALF, y01_l, a01 );
78  // a01 = a01 + 1/2 * alpha11 * y01;
79  FLA_Axpy_external( psi11, b01, a01 );
80 
81  // A00 = A00 + a01 * b01' + b01 * a01';
82  FLA_Her2c_external( FLA_UPPER_TRIANGULAR, FLA_NO_CONJUGATE,
83  FLA_ONE, a01, b01, A00 );
84 
85  //// a01 = a01 + 1/2 * y01;
86  //FLA_Axpy_external( FLA_ONE_HALF, y01_l, a01 );
87  // a01 = a01 + 1/2 * alpha11 * y01;
88  FLA_Axpy_external( psi11, b01, a01 );
89 
90  // a01 = a01 * beta11;
91  FLA_Scal_external( beta11, a01 );
92 
93  // alpha11 = conj(beta11) * alpha11 * beta11;
94  // = beta11 * alpha11 * beta11;
95  FLA_Scal_external( beta11, alpha11 );
96  FLA_Scal_external( beta11, alpha11 );
97 
98  // A02 = A02 + b01 * a12t;
99  FLA_Ger_external( FLA_ONE, b01, a12t, A02 );
100 
101  // a12t = beta11 * a12t;
102  FLA_Scal_external( beta11, a12t );
103 
104  /*------------------------------------------------------------*/
105 
106  FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, a01, /**/ A02,
107  a10t, alpha11, /**/ a12t,
108  /* ************** */ /* ************************ */
109  &ABL, /**/ &ABR, A20, a21, /**/ A22,
110  FLA_TL );
111 
112  FLA_Cont_with_3x3_to_2x2( &BTL, /**/ &BTR, B00, b01, /**/ B02,
113  b10t, beta11, /**/ b12t,
114  /* ************** */ /* *********************** */
115  &BBL, /**/ &BBR, B20, b21, /**/ B22,
116  FLA_TL );
117 
118  //FLA_Cont_with_3x1_to_2x1( &yT, y01,
119  // psi11,
120  // /* ** */ /* ***** */
121  // &yB, y21, FLA_TOP );
122  }
123 
124  return FLA_SUCCESS;
125 }
FLA_Error FLA_Axpy_external(FLA_Obj alpha, FLA_Obj A, FLA_Obj B)
Definition: FLA_Axpy_external.c:13
FLA_Obj FLA_ONE_HALF
Definition: FLA_Init.c:19
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_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_Obj FLA_ONE
Definition: FLA_Init.c:18
FLA_Error FLA_Copy_external(FLA_Obj A, FLA_Obj B)
Definition: FLA_Copy_external.c:13
Definition: FLA_type_defs.h:158
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_Ger_external(FLA_Obj alpha, FLA_Obj x, FLA_Obj y, FLA_Obj A)
Definition: FLA_Ger_external.c:13
dim_t FLA_Obj_length(FLA_Obj obj)
Definition: FLA_Query.c:116
FLA_Error FLA_Her2c_external(FLA_Uplo uplo, FLA_Conj conj, FLA_Obj alpha, FLA_Obj x, FLA_Obj y, FLA_Obj A)
Definition: FLA_Her2c_external.c:13