Functions | |
FLA_Error | FLA_Ttmm_l_unb_var3 (FLA_Obj A) |
References FLA_Absolute_square(), FLA_Cont_with_3x3_to_2x2(), FLA_Dotcs_external(), FLA_Dots_external(), FLA_Obj_is_real(), FLA_Obj_length(), FLA_ONE, FLA_Part_2x2(), FLA_Repart_2x2_to_3x3(), and FLA_Trmv_external().
00038 { 00039 FLA_Obj ATL, ATR, A00, a01, A02, 00040 ABL, ABR, a10t, alpha11, a12t, 00041 A20, a21, A22; 00042 00043 FLA_Part_2x2( A, &ATL, &ATR, 00044 &ABL, &ABR, 0, 0, FLA_TL ); 00045 00046 while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){ 00047 00048 FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &a01, &A02, 00049 /* ************* */ /* ************************** */ 00050 &a10t, /**/ &alpha11, &a12t, 00051 ABL, /**/ ABR, &A20, /**/ &a21, &A22, 00052 1, 1, FLA_BR ); 00053 00054 /*------------------------------------------------------------*/ 00055 00056 if ( FLA_Obj_is_real( A ) ) 00057 { 00058 /* alpha11 = alpha11 * alpha11; */ 00059 FLA_Absolute_square( alpha11 ); 00060 00061 /* alpha11 = alpha11 + a21' * a21; */ 00062 FLA_Dots_external( FLA_ONE, a21, a21, FLA_ONE, alpha11 ); 00063 00064 /* a21 = tril( A22 )' * a21; */ 00065 FLA_Trmv_external( FLA_LOWER_TRIANGULAR, FLA_TRANSPOSE, FLA_NONUNIT_DIAG, 00066 A22, a21 ); 00067 } 00068 else 00069 { 00070 /* alpha11 = alpha11' * alpha11; */ 00071 FLA_Absolute_square( alpha11 ); 00072 00073 /* alpha11 = alpha11 + a21' * a21; */ 00074 FLA_Dotcs_external( FLA_CONJUGATE, FLA_ONE, a21, a21, FLA_ONE, alpha11 ); 00075 00076 /* a21 = tril( A22 )' * a21; */ 00077 FLA_Trmv_external( FLA_LOWER_TRIANGULAR, FLA_CONJ_TRANSPOSE, FLA_NONUNIT_DIAG, 00078 A22, a21 ); 00079 } 00080 00081 /*------------------------------------------------------------*/ 00082 00083 FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, a01, /**/ A02, 00084 a10t, alpha11, /**/ a12t, 00085 /* ************** */ /* ************************ */ 00086 &ABL, /**/ &ABR, A20, a21, /**/ A22, 00087 FLA_TL ); 00088 00089 } 00090 00091 return FLA_SUCCESS; 00092 }