FLA_Ttmm_l_blk_var1.c File Reference

(r)


Functions

FLA_Error FLA_Ttmm_l_blk_var1 (FLA_Obj A, fla_ttmm_t *cntl)

Function Documentation

FLA_Error FLA_Ttmm_l_blk_var1 ( FLA_Obj  A,
fla_ttmm_t cntl 
)

References FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Herk_internal(), FLA_Obj_is_real(), FLA_Obj_length(), FLA_ONE, FLA_Part_2x2(), FLA_Repart_2x2_to_3x3(), FLA_Syrk_internal(), FLA_Trmm_internal(), and FLA_Ttmm_internal().

Referenced by FLA_Ttmm_l().

00036 {
00037   FLA_Obj ATL,   ATR,      A00, A01, A02, 
00038           ABL,   ABR,      A10, A11, A12,
00039                            A20, A21, A22;
00040 
00041   dim_t b;
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     b = FLA_Determine_blocksize( ABR, FLA_BR, FLA_Cntl_blocksize( cntl ) );
00049 
00050     FLA_Repart_2x2_to_3x3( ATL, /**/ ATR,       &A00, /**/ &A01, &A02,
00051                         /* ************* */   /* ******************** */
00052                                                 &A10, /**/ &A11, &A12,
00053                            ABL, /**/ ABR,       &A20, /**/ &A21, &A22,
00054                            b, b, FLA_BR );
00055 
00056     /*------------------------------------------------------------*/
00057 
00058     if ( FLA_Obj_is_real( A ) )
00059     {
00060       /* A00 = A00 + A10' * A10; */
00061       FLA_Syrk_internal( FLA_LOWER_TRIANGULAR, FLA_TRANSPOSE,
00062                          FLA_ONE, A10, FLA_ONE, A00,
00063                          FLA_Cntl_sub_syrk( cntl ) );
00064 
00065       /* A10 = tril( A11 )' * A10; */
00066       FLA_Trmm_internal( FLA_LEFT, FLA_LOWER_TRIANGULAR, FLA_TRANSPOSE, FLA_NONUNIT_DIAG,
00067                          FLA_ONE, A11, A10,
00068                          FLA_Cntl_sub_trmm( cntl ) );
00069 
00070       /* A11 = tril( A11 )' * tril( A11 ); */
00071       FLA_Ttmm_internal( FLA_LOWER_TRIANGULAR, A11,
00072                          FLA_Cntl_sub_ttmm( cntl ) );
00073     }
00074     else
00075     {
00076       /* A00 = A00 + A10' * A10; */
00077       FLA_Herk_internal( FLA_LOWER_TRIANGULAR, FLA_CONJ_TRANSPOSE,
00078                          FLA_ONE, A10, FLA_ONE, A00,
00079                          FLA_Cntl_sub_herk( cntl ) );
00080 
00081       /* A10 = tril( A11 )' * A10; */
00082       FLA_Trmm_internal( FLA_LEFT, FLA_LOWER_TRIANGULAR, FLA_CONJ_TRANSPOSE, FLA_NONUNIT_DIAG,
00083                          FLA_ONE, A11, A10,
00084                          FLA_Cntl_sub_trmm( cntl ) );
00085 
00086       /* A11 = tril( A11 )' * tril( A11 ); */
00087       FLA_Ttmm_internal( FLA_LOWER_TRIANGULAR, A11,
00088                          FLA_Cntl_sub_ttmm( cntl ) );
00089     }
00090 
00091     /*------------------------------------------------------------*/
00092 
00093     FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR,       A00, A01, /**/ A02,
00094                                                      A10, A11, /**/ A12,
00095                             /* ************** */  /* ****************** */
00096                               &ABL, /**/ &ABR,       A20, A21, /**/ A22,
00097                               FLA_TL );
00098 
00099   }
00100 
00101   return FLA_SUCCESS;
00102 }


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