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Functions | |
FLA_Error | FLA_Trsm_lun_unb_var1 (FLA_Diag diagA, FLA_Obj alpha, FLA_Obj A, FLA_Obj B) |
References FLA_Cont_with_3x1_to_2x1(), FLA_Cont_with_3x3_to_2x2(), FLA_Gemv_external(), FLA_Inv_scal_external(), 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_Scal_external().
Referenced by FLA_Trsm_lun().
{ FLA_Obj ATL, ATR, A00, a01, A02, ABL, ABR, a10t, alpha11, a12t, A20, a21, A22; FLA_Obj BT, B0, BB, b1t, B2; FLA_Scal_external( alpha, B ); FLA_Part_2x2( A, &ATL, &ATR, &ABL, &ABR, 0, 0, FLA_BR ); FLA_Part_2x1( B, &BT, &BB, 0, FLA_BOTTOM ); while ( FLA_Obj_length( ABR ) < FLA_Obj_length( A ) ){ FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, &a01, /**/ &A02, &a10t, &alpha11, /**/ &a12t, /* ************* */ /* ************************** */ ABL, /**/ ABR, &A20, &a21, /**/ &A22, 1, 1, FLA_TL ); FLA_Repart_2x1_to_3x1( BT, &B0, &b1t, /* ** */ /* *** */ BB, &B2, 1, FLA_TOP ); /*------------------------------------------------------------*/ /* b1t = b1t - a12t * B2; */ FLA_Gemv_external( FLA_TRANSPOSE, FLA_MINUS_ONE, B2, a12t, FLA_ONE, b1t ); /* b1t = b1t / alpha11; */ if ( diagA != FLA_UNIT_DIAG ) FLA_Inv_scal_external( alpha11, b1t ); /*------------------------------------------------------------*/ FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, /**/ a01, A02, /* ************** */ /* ************************ */ a10t, /**/ alpha11, a12t, &ABL, /**/ &ABR, A20, /**/ a21, A22, FLA_BR ); FLA_Cont_with_3x1_to_2x1( &BT, B0, /* ** */ /* *** */ b1t, &BB, B2, FLA_BOTTOM ); } return FLA_SUCCESS; }