#include "FLAME.h" int Chol_blk_var2( FLA_Obj A, int nb_alg ) { FLA_Obj ATL, ATR, A00, A01, A02, ABL, ABR, A10, A11, A12, A20, A21, A22; int b; FLA_Part_2x2( A, &ATL, &ATR, &ABL, &ABR, 0, 0, FLA_TL ); while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){ b = min( FLA_Obj_length( ABR ), nb_alg ); FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &A01, &A02, /* ************* */ /* ******************** */ &A10, /**/ &A11, &A12, ABL, /**/ ABR, &A20, /**/ &A21, &A22, b, b, FLA_BR ); /*------------------------------------------------------------*/ // A11 = A11 - tril( A10 * A10' ); FLA_Syrk( FLA_LOWER_TRIANGULAR, FLA_NO_TRANSPOSE, FLA_MINUS_ONE, A10, FLA_ONE, A11 ); // A11 = Chol_unb_var1( A11 ); Chol_unb_var1( A11 ); // A21 = A21 - A20 * A10'; FLA_Gemm( FLA_NO_TRANSPOSE, FLA_TRANSPOSE, FLA_MINUS_ONE, A20, A10, FLA_ONE, A21 ); // A21 = A21 * inv( tril( A11 ) )'; FLA_Trsm( FLA_RIGHT, FLA_LOWER_TRIANGULAR, FLA_TRANSPOSE, FLA_NONUNIT_DIAG, FLA_ONE, A11, A21 ); /*------------------------------------------------------------*/ FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, A01, /**/ A02, A10, A11, /**/ A12, /* ************** */ /* ****************** */ &ABL, /**/ &ABR, A20, A21, /**/ A22, FLA_TL ); } return FLA_SUCCESS; }