libflame
revision_anchor
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Functions | |
FLA_Error | FLA_Tridiag_UT_recover_tau_submatrix (FLA_Obj T, FLA_Obj t) |
FLA_Error | FLA_Tridiag_UT_recover_tau (FLA_Obj T, FLA_Obj t) |
References FLA_Check_error_level(), FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x1_to_2x1(), FLA_Obj_length(), FLA_Part_1x2(), FLA_Part_2x1(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x1_to_3x1(), FLA_Tridiag_UT_recover_tau_check(), and FLA_Tridiag_UT_recover_tau_submatrix().
{ FLA_Obj TL, TR, T0, T1, T2; FLA_Obj tT, t0, tB, t1, t2; dim_t b_alg, b; if ( FLA_Check_error_level() >= FLA_MIN_ERROR_CHECKING ) FLA_Tridiag_UT_recover_tau_check( T, t ); b_alg = FLA_Obj_length( T ); FLA_Part_1x2( T, &TL, &TR, 0, FLA_LEFT ); FLA_Part_2x1( t, &tT, &tB, 0, FLA_TOP ); while ( FLA_Obj_length( tT ) < FLA_Obj_length( t ) ){ b = min( FLA_Obj_length( tB ), b_alg ); FLA_Repart_1x2_to_1x3( TL, /**/ TR, &T0, /**/ &T1, &T2, b, FLA_RIGHT ); FLA_Repart_2x1_to_3x1( tT, &t0, /* ** */ /* ** */ &t1, tB, &t2, b, FLA_BOTTOM ); /*------------------------------------------------------------*/ FLA_Tridiag_UT_recover_tau_submatrix( T1, t1 ); /*------------------------------------------------------------*/ FLA_Cont_with_1x3_to_1x2( &TL, /**/ &TR, T0, T1, /**/ T2, FLA_LEFT ); FLA_Cont_with_3x1_to_2x1( &tT, t0, t1, /* ** */ /* ** */ &tB, t2, FLA_TOP ); } return FLA_SUCCESS; }
References FLA_Cont_with_3x1_to_2x1(), FLA_Cont_with_3x3_to_2x2(), FLA_Copy_external(), FLA_Obj_min_dim(), FLA_Part_2x1(), FLA_Part_2x2(), FLA_Repart_2x1_to_3x1(), and FLA_Repart_2x2_to_3x3().
Referenced by FLA_Tridiag_UT_recover_tau().
{ FLA_Obj TTL, TTR, T00, t01, T02, TBL, TBR, t10t, tau11, t12t, T20, t21, T22; FLA_Obj tT, t0, tB, tau1, t2; FLA_Part_2x2( T, &TTL, &TTR, &TBL, &TBR, 0, 0, FLA_TL ); FLA_Part_2x1( t, &tT, &tB, 0, FLA_TOP ); while ( FLA_Obj_min_dim( TBR ) > 0 ){ FLA_Repart_2x2_to_3x3( TTL, /**/ TTR, &T00, /**/ &t01, &T02, /* ************* */ /* ************************ */ &t10t, /**/ &tau11, &t12t, TBL, /**/ TBR, &T20, /**/ &t21, &T22, 1, 1, FLA_BR ); FLA_Repart_2x1_to_3x1( tT, &t0, /* ** */ /* ** */ &tau1, tB, &t2, 1, FLA_BOTTOM ); /*------------------------------------------------------------*/ // tau1 = tau11; FLA_Copy_external( tau11, tau1 ); /*------------------------------------------------------------*/ FLA_Cont_with_3x3_to_2x2( &TTL, /**/ &TTR, T00, t01, /**/ T02, t10t, tau11, /**/ t12t, /* ************** */ /* ********************** */ &TBL, /**/ &TBR, T20, t21, /**/ T22, FLA_TL ); FLA_Cont_with_3x1_to_2x1( &tT, t0, tau1, /* ** */ /* ** */ &tB, t2, FLA_TOP ); } return FLA_SUCCESS; }