Functions | |
FLA_Error | FLA_Trinv_l_blk_var4 (FLA_Diag diag, FLA_Obj A, fla_trinv_t *cntl) |
FLA_Error FLA_Trinv_l_blk_var4 | ( | FLA_Diag | diag, | |
FLA_Obj | A, | |||
fla_trinv_t * | cntl | |||
) |
References FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_MINUS_ONE, FLA_Obj_length(), FLA_ONE, FLA_Part_2x2(), FLA_Repart_2x2_to_3x3(), FLA_Trinv_internal(), FLA_Trmm_internal(), and FLA_Trsm_internal().
Referenced by FLA_Trinv_l().
00038 { 00039 FLA_Obj ATL, ATR, A00, A01, A02, 00040 ABL, ABR, A10, A11, A12, 00041 A20, A21, A22; 00042 00043 dim_t b; 00044 00045 FLA_Part_2x2( A, &ATL, &ATR, 00046 &ABL, &ABR, 0, 0, FLA_TL ); 00047 00048 while ( FLA_Obj_length( ATL ) < FLA_Obj_length( A ) ){ 00049 00050 b = FLA_Determine_blocksize( ABR, FLA_BR, FLA_Cntl_blocksize( cntl ) ); 00051 00052 FLA_Repart_2x2_to_3x3( ATL, /**/ ATR, &A00, /**/ &A01, &A02, 00053 /* ************* */ /* ******************** */ 00054 &A10, /**/ &A11, &A12, 00055 ABL, /**/ ABR, &A20, /**/ &A21, &A22, 00056 b, b, FLA_BR ); 00057 00058 /*------------------------------------------------------------*/ 00059 00060 /* A21 = -triu( A22 ) \ A21 */ 00061 FLA_Trsm_internal( FLA_LEFT, FLA_LOWER_TRIANGULAR, FLA_NO_TRANSPOSE, diag, 00062 FLA_MINUS_ONE, A22, A21, 00063 FLA_Cntl_sub_trsm1( cntl ) ); 00064 00065 /* A20 = -A21 * A10 + A20 */ 00066 FLA_Gemm_internal( FLA_NO_TRANSPOSE, FLA_NO_TRANSPOSE, 00067 FLA_MINUS_ONE, A21, A10, FLA_ONE, A20, 00068 FLA_Cntl_sub_gemm( cntl ) ); 00069 00070 /* A10 = A10 * A00 */ 00071 FLA_Trmm_internal( FLA_RIGHT, FLA_LOWER_TRIANGULAR, FLA_NO_TRANSPOSE, diag, 00072 FLA_ONE, A00, A10, 00073 FLA_Cntl_sub_trmm( cntl ) ); 00074 00075 /* A11 = inv( A11 ) */ 00076 FLA_Trinv_internal( FLA_LOWER_TRIANGULAR, diag, A11, 00077 FLA_Cntl_sub_trinv( cntl ) ); 00078 00079 /*------------------------------------------------------------*/ 00080 00081 FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, A01, /**/ A02, 00082 A10, A11, /**/ A12, 00083 /* ************** */ /* ****************** */ 00084 &ABL, /**/ &ABR, A20, A21, /**/ A22, 00085 FLA_TL ); 00086 00087 } 00088 00089 return FLA_SUCCESS; 00090 }