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Functions | |
FLA_Error | FLA_LU_piv_blk_var5 (FLA_Obj A, FLA_Obj p, fla_lu_t *cntl) |
References FLA_Apply_pivots_internal(), FLA_Cont_with_3x1_to_2x1(), FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_LU_piv_internal(), FLA_Merge_2x1(), FLA_MINUS_ONE, FLA_Obj_length(), FLA_Obj_width(), FLA_ONE, FLA_Part_2x1(), FLA_Part_2x2(), FLA_Repart_2x1_to_3x1(), FLA_Repart_2x2_to_3x3(), and FLA_Trsm_internal().
Referenced by FLA_LU_piv_internal().
{ FLA_Obj ATL, ATR, A00, A01, A02, ABL, ABR, A10, A11, A12, A20, A21, A22; FLA_Obj pT, p0, pB, p1, p2; FLA_Obj AB0, AB1, AB2; dim_t b; FLA_Part_2x2( A, &ATL, &ATR, &ABL, &ABR, 0, 0, FLA_TL ); FLA_Part_2x1( p, &pT, &pB, 0, FLA_TOP ); while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) && FLA_Obj_width( ATL ) < FLA_Obj_width( A )){ b = FLA_Determine_blocksize( ABR, FLA_BR, FLA_Cntl_blocksize( cntl ) ); FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &A01, &A02, /* ************* */ /* ******************** */ &A10, /**/ &A11, &A12, ABL, /**/ ABR, &A20, /**/ &A21, &A22, b, b, FLA_BR ); FLA_Repart_2x1_to_3x1( pT, &p0, /* ** */ /* ** */ &p1, pB, &p2, b, FLA_BOTTOM ); /*------------------------------------------------------------*/ // AB1 = / A11 \ // \ A21 / FLA_Merge_2x1( A11, A21, &AB1 ); // AB1, p1 = LU_piv( AB1 ) FLA_LU_piv_internal( AB1, p1, FLA_Cntl_sub_lu( cntl ) ); // AB0 = / A10 \ // \ A20 / FLA_Merge_2x1( A10, A20, &AB0 ); // Apply computed pivots to AB0 FLA_Apply_pivots_internal( FLA_LEFT, FLA_NO_TRANSPOSE, p1, AB0, FLA_Cntl_sub_appiv1( cntl ) ); // AB2 = / A12 \ // \ A22 / FLA_Merge_2x1( A12, A22, &AB2 ); // Apply computed pivots to AB2 FLA_Apply_pivots_internal( FLA_LEFT, FLA_NO_TRANSPOSE, p1, AB2, FLA_Cntl_sub_appiv1( cntl ) ); // A12 = trilu( A11 ) \ A12 FLA_Trsm_internal( FLA_LEFT, FLA_LOWER_TRIANGULAR, FLA_NO_TRANSPOSE, FLA_UNIT_DIAG, FLA_ONE, A11, A12, FLA_Cntl_sub_trsm1( cntl ) ); // A22 = A22 - A21 * A12 FLA_Gemm_internal( FLA_NO_TRANSPOSE, FLA_NO_TRANSPOSE, FLA_MINUS_ONE, A21, A12, FLA_ONE, A22, FLA_Cntl_sub_gemm1( cntl ) ); /*------------------------------------------------------------*/ FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, A01, /**/ A02, A10, A11, /**/ A12, /* ************** */ /* ****************** */ &ABL, /**/ &ABR, A20, A21, /**/ A22, FLA_TL ); FLA_Cont_with_3x1_to_2x1( &pT, p0, p1, /* ** */ /* ** */ &pB, p2, FLA_TOP ); } return FLA_SUCCESS; }