FLA_Ttmm_l_unb_var1.c File Reference

(r)


Functions

FLA_Error FLA_Ttmm_l_unb_var1 (FLA_Obj A)

Function Documentation

FLA_Error FLA_Ttmm_l_unb_var1 ( FLA_Obj  A  ) 

References FLA_Absolute_square(), FLA_Cont_with_3x3_to_2x2(), FLA_Herc_external(), FLA_Obj_is_real(), FLA_Obj_length(), FLA_ONE, FLA_Part_2x2(), FLA_Repart_2x2_to_3x3(), FLA_Scal_external(), and FLA_Syr_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       /* A00 = A00 + a10t' * a10t; */
00059       FLA_Syr_external( FLA_LOWER_TRIANGULAR, FLA_ONE, a10t, A00 );
00060 
00061       /* a10t = alpha11 * a10t; */
00062       FLA_Scal_external( alpha11, a10t );
00063 
00064       /* alpha11 = alpha11 * alpha11; */
00065       FLA_Absolute_square( alpha11 );
00066     }
00067     else
00068     {
00069       /* A00 = A00 + a10t' * a10t; */
00070       FLA_Herc_external( FLA_LOWER_TRIANGULAR, FLA_CONJUGATE, FLA_ONE, a10t, A00 );
00071 
00072       /* a10t = alpha11 * a10t; */
00073       FLA_Scal_external( alpha11, a10t );
00074 
00075       /* alpha11 = alpha11' * alpha11; */
00076       FLA_Absolute_square( alpha11 );
00077     }
00078 
00079     /*------------------------------------------------------------*/
00080 
00081     FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR,       A00,  a01,     /**/ A02,
00082                                                      a10t, alpha11, /**/ a12t,
00083                             /* ************** */  /* ************************ */
00084                               &ABL, /**/ &ABR,       A20,  a21,     /**/ A22,
00085                               FLA_TL );
00086 
00087   }
00088 
00089   return FLA_SUCCESS;
00090 }


Generated on Mon Jul 6 05:45:56 2009 for libflame by  doxygen 1.5.9