FLA_Sylv_tt_blk_var15.c File Reference

(r)


Functions

FLA_Error FLA_Sylv_tt_blk_var15 (FLA_Obj isgn, FLA_Obj A, FLA_Obj B, FLA_Obj C, FLA_Obj scale, fla_sylv_t *cntl)

Function Documentation

FLA_Error FLA_Sylv_tt_blk_var15 ( FLA_Obj  isgn,
FLA_Obj  A,
FLA_Obj  B,
FLA_Obj  C,
FLA_Obj  scale,
fla_sylv_t cntl 
)

References FLA_Cont_with_3x1_to_2x1(), FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_MINUS_ONE, FLA_Obj_length(), FLA_ONE, FLA_Part_2x1(), FLA_Part_2x2(), FLA_Repart_2x1_to_3x1(), FLA_Repart_2x2_to_3x3(), and FLA_Sylv_internal().

Referenced by FLA_Sylv_tt().

00036 {
00037   FLA_Obj ATL,   ATR,      A00, A01, A02, 
00038           ABL,   ABR,      A10, A11, A12,
00039                            A20, A21, A22;
00040 
00041   FLA_Obj CT,              C0,
00042           CB,              C1,
00043                            C2;
00044 
00045   dim_t b;
00046 
00047   FLA_Part_2x2( A,    &ATL, &ATR,
00048                       &ABL, &ABR,     0, 0, FLA_TL );
00049 
00050   FLA_Part_2x1( C,    &CT, 
00051                       &CB,            0, FLA_TOP );
00052 
00053   while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){
00054 
00055     b = FLA_Determine_blocksize( CB, FLA_BOTTOM, FLA_Cntl_blocksize( cntl ) );
00056 
00057     FLA_Repart_2x2_to_3x3( ATL, /**/ ATR,       &A00, /**/ &A01, &A02,
00058                         /* ************* */   /* ******************** */
00059                                                 &A10, /**/ &A11, &A12,
00060                            ABL, /**/ ABR,       &A20, /**/ &A21, &A22,
00061                            b, b, FLA_BR );
00062 
00063     FLA_Repart_2x1_to_3x1( CT,                &C0, 
00064                         /* ** */            /* ** */
00065                                               &C1, 
00066                            CB,                &C2,        b, FLA_BOTTOM );
00067 
00068     // Loop Invariant:
00069     // CT = sylv( ATL', B', CT )
00070     // CB = CB
00071 
00072     /*------------------------------------------------------------*/
00073 
00074     // C1 = sylv( A11', B', C1 - A01' * C0 );
00075     FLA_Gemm_internal( FLA_TRANSPOSE, FLA_NO_TRANSPOSE,
00076                        FLA_MINUS_ONE, A01, C0, FLA_ONE, C1,
00077                        FLA_Cntl_sub_gemm1( cntl ) );
00078 
00079     FLA_Sylv_internal( FLA_TRANSPOSE, FLA_TRANSPOSE, 
00080                        isgn, A11, B, C1, scale,
00081                        FLA_Cntl_sub_sylv1( cntl ) );
00082 
00083     /*------------------------------------------------------------*/
00084 
00085     FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR,       A00, A01, /**/ A02,
00086                                                      A10, A11, /**/ A12,
00087                             /* ************** */  /* ****************** */
00088                               &ABL, /**/ &ABR,       A20, A21, /**/ A22,
00089                               FLA_TL );
00090 
00091     FLA_Cont_with_3x1_to_2x1( &CT,                C0, 
00092                                                   C1, 
00093                             /* ** */           /* ** */
00094                               &CB,                C2,     FLA_TOP );
00095 
00096   }
00097 
00098   return FLA_SUCCESS;
00099 }


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