1 /*
2
3 Copyright (C) 2014, The University of Texas at Austin
4
5 This file is part of libflame and is available under the 3-Clause
6 BSD license, which can be found in the LICENSE file at the top-level
7 directory, or at http://opensource.org/licenses/BSD-3-Clause
8
9 */
10
11 #include "FLAME.h"
12
13 #ifdef FLA_ENABLE_NON_CRITICAL_CODE
14
FLA_Trsm_ruh_blk_var1(FLA_Diag diagA,FLA_Obj alpha,FLA_Obj A,FLA_Obj B,fla_trsm_t * cntl)15 FLA_Error FLA_Trsm_ruh_blk_var1( FLA_Diag diagA, FLA_Obj alpha, FLA_Obj A, FLA_Obj B, fla_trsm_t* cntl )
16 {
17 FLA_Obj ATL, ATR, A00, A01, A02,
18 ABL, ABR, A10, A11, A12,
19 A20, A21, A22;
20
21 FLA_Obj BL, BR, B0, B1, B2;
22
23 dim_t b;
24
25 FLA_Scal_internal( alpha, B,
26 FLA_Cntl_sub_scal( cntl ) );
27
28 FLA_Part_2x2( A, &ATL, &ATR,
29 &ABL, &ABR, 0, 0, FLA_BR );
30
31 FLA_Part_1x2( B, &BL, &BR, 0, FLA_RIGHT );
32
33 while ( FLA_Obj_length( ABR ) < FLA_Obj_length( A ) ){
34
35 b = FLA_Determine_blocksize( ATL, FLA_TL, FLA_Cntl_blocksize( cntl ) );
36
37 FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, &A01, /**/ &A02,
38 &A10, &A11, /**/ &A12,
39 /* ************* */ /* ******************** */
40 ABL, /**/ ABR, &A20, &A21, /**/ &A22,
41 b, b, FLA_TL );
42
43 FLA_Repart_1x2_to_1x3( BL, /**/ BR, &B0, &B1, /**/ &B2,
44 b, FLA_LEFT );
45
46 /*------------------------------------------------------------*/
47
48 /* B1 = B1 - B2 * A12'; */
49 FLA_Gemm_internal( FLA_NO_TRANSPOSE, FLA_CONJ_TRANSPOSE,
50 FLA_MINUS_ONE, B2, A12, FLA_ONE, B1,
51 FLA_Cntl_sub_gemm( cntl ) );
52
53 /* B1 = B1 / triu( A11' ); */
54 FLA_Trsm_internal( FLA_RIGHT, FLA_UPPER_TRIANGULAR, FLA_CONJ_TRANSPOSE, diagA,
55 FLA_ONE, A11, B1,
56 FLA_Cntl_sub_trsm( cntl ) );
57
58 /*------------------------------------------------------------*/
59
60 FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, /**/ A01, A02,
61 /* ************** */ /* ****************** */
62 A10, /**/ A11, A12,
63 &ABL, /**/ &ABR, A20, /**/ A21, A22,
64 FLA_BR );
65
66 FLA_Cont_with_1x3_to_1x2( &BL, /**/ &BR, B0, /**/ B1, B2,
67 FLA_RIGHT );
68
69 }
70
71 return FLA_SUCCESS;
72 }
73
74 #endif
75