FLA_Trsm_lln_unb_var1.c File Reference

(r)


Functions

FLA_Error FLA_Trsm_lln_unb_var1 (FLA_Diag diagA, FLA_Obj alpha, FLA_Obj A, FLA_Obj B)

Function Documentation

FLA_Error FLA_Trsm_lln_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().

00038 {
00039   FLA_Obj ATL,   ATR,      A00,  a01,     A02, 
00040           ABL,   ABR,      a10t, alpha11, a12t,
00041                            A20,  a21,     A22;
00042 
00043   FLA_Obj BT,              B0,
00044           BB,              b1t,
00045                            B2;
00046 
00047   FLA_Scal_external( alpha, B );
00048 
00049   FLA_Part_2x2( A,    &ATL, &ATR,
00050                       &ABL, &ABR,     0, 0, FLA_TL );
00051 
00052   FLA_Part_2x1( B,    &BT, 
00053                       &BB,            0, FLA_TOP );
00054 
00055   while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){
00056 
00057     FLA_Repart_2x2_to_3x3( ATL, /**/ ATR,       &A00,  /**/ &a01,     &A02,
00058                         /* ************* */   /* ************************** */
00059                                                 &a10t, /**/ &alpha11, &a12t,
00060                            ABL, /**/ ABR,       &A20,  /**/ &a21,     &A22,
00061                            1, 1, FLA_BR );
00062 
00063     FLA_Repart_2x1_to_3x1( BT,                &B0, 
00064                         /* ** */            /* *** */
00065                                               &b1t, 
00066                            BB,                &B2,        1, FLA_BOTTOM );
00067 
00068     /*------------------------------------------------------------*/
00069 
00070     /* b1t = b1t - a10t * B0 */
00071     FLA_Gemv_external( FLA_TRANSPOSE, FLA_MINUS_ONE, B0, a10t, FLA_ONE, b1t );
00072 
00073     /* b1t = b1t / alpha11 */
00074     if ( diagA != FLA_UNIT_DIAG )
00075       FLA_Inv_scal_external( alpha11, b1t );
00076 
00077     /*------------------------------------------------------------*/
00078 
00079     FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR,       A00,  a01,     /**/ A02,
00080                                                      a10t, alpha11, /**/ a12t,
00081                             /* ************** */  /* ************************ */
00082                               &ABL, /**/ &ABR,       A20,  a21,     /**/ A22,
00083                               FLA_TL );
00084 
00085     FLA_Cont_with_3x1_to_2x1( &BT,                B0, 
00086                                                   b1t, 
00087                             /* ** */           /* *** */
00088                               &BB,                B2,     FLA_TOP );
00089 
00090   }
00091 
00092   return FLA_SUCCESS;
00093 }


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