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FLA_Gemv_n_blk_var2.c File Reference

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Functions

FLA_Error FLA_Gemv_n_blk_var2 (FLA_Obj alpha, FLA_Obj A, FLA_Obj x, FLA_Obj beta, FLA_Obj y, fla_gemv_t *cntl)
 

Function Documentation

◆ FLA_Gemv_n_blk_var2()

FLA_Error FLA_Gemv_n_blk_var2 ( FLA_Obj  alpha,
FLA_Obj  A,
FLA_Obj  x,
FLA_Obj  beta,
FLA_Obj  y,
fla_gemv_t cntl 
)

References FLA_Cont_with_3x1_to_2x1(), FLA_Determine_blocksize(), FLA_Gemv_internal(), FLA_Obj_length(), FLA_Part_2x1(), FLA_Repart_2x1_to_3x1(), and y1.

Referenced by FLA_Gemv_n().

16 {
17  FLA_Obj AT, A0,
18  AB, A1,
19  A2;
20 
21  FLA_Obj yT, y0,
22  yB, y1,
23  y2;
24 
25  dim_t b;
26 
27  FLA_Part_2x1( A, &AT,
28  &AB, 0, FLA_BOTTOM );
29 
30  FLA_Part_2x1( y, &yT,
31  &yB, 0, FLA_BOTTOM );
32 
33  while ( FLA_Obj_length( AB ) < FLA_Obj_length( A ) ){
34 
35  b = FLA_Determine_blocksize( AT, FLA_TOP, FLA_Cntl_blocksize( cntl ) );
36 
37  FLA_Repart_2x1_to_3x1( AT, &A0,
38  &A1,
39  /* ** */ /* ** */
40  AB, &A2, b, FLA_TOP );
41 
42  FLA_Repart_2x1_to_3x1( yT, &y0,
43  &y1,
44  /* ** */ /* ** */
45  yB, &y2, b, FLA_TOP );
46 
47  /*------------------------------------------------------------*/
48 
49  /* y1 = alpha * A1 * x + y1; */
50  FLA_Gemv_internal( FLA_NO_TRANSPOSE,
51  alpha, A1, x, beta, y1,
52  FLA_Cntl_sub_gemv( cntl ) );
53 
54  /*------------------------------------------------------------*/
55 
56  FLA_Cont_with_3x1_to_2x1( &AT, A0,
57  /* ** */ /* ** */
58  A1,
59  &AB, A2, FLA_BOTTOM );
60 
61  FLA_Cont_with_3x1_to_2x1( &yT, y0,
62  /* ** */ /* ** */
63  y1,
64  &yB, y2, FLA_BOTTOM );
65 
66  }
67 
68  return FLA_SUCCESS;
69 }
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_Error FLA_Gemv_internal(FLA_Trans transa, FLA_Obj alpha, FLA_Obj A, FLA_Obj x, FLA_Obj beta, FLA_Obj y, fla_gemv_t *cntl)
Definition: FLA_Gemv_internal.c:16
unsigned long dim_t
Definition: FLA_type_defs.h:71
dim_t FLA_Determine_blocksize(FLA_Obj A_unproc, FLA_Quadrant to_dir, fla_blocksize_t *cntl_blocksizes)
Definition: FLA_Blocksize.c:234
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
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
dim_t FLA_Obj_length(FLA_Obj obj)
Definition: FLA_Query.c:116
double *restrict y1
Definition: bl1_dotsv2.c:145