Functions | |
FLA_Error | FLA_Trinv_u_blk_var3 (FLA_Diag diag, FLA_Obj A, fla_trinv_t *cntl) |
FLA_Error FLA_Trinv_u_blk_var3 | ( | 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(), and FLA_Trsm_internal().
Referenced by FLA_Trinv_u().
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 /* A12 = -triu( A11 ) \ A12 */ 00059 FLA_Trsm_internal( FLA_LEFT, FLA_UPPER_TRIANGULAR, FLA_NO_TRANSPOSE, diag, 00060 FLA_MINUS_ONE, A11, A12, 00061 FLA_Cntl_sub_trsm1( cntl ) ); 00062 00063 /* A02 = A01 * A12 + A02 */ 00064 FLA_Gemm_internal( FLA_NO_TRANSPOSE, FLA_NO_TRANSPOSE, 00065 FLA_ONE, A01, A12, FLA_ONE, A02, 00066 FLA_Cntl_sub_gemm( cntl ) ); 00067 00068 /* A01 = A01 / triu( A11 ) */ 00069 FLA_Trsm_internal( FLA_RIGHT, FLA_UPPER_TRIANGULAR, FLA_NO_TRANSPOSE, diag, 00070 FLA_ONE, A11, A01, 00071 FLA_Cntl_sub_trsm2( cntl ) ); 00072 00073 /* A11 = inv( A11 ) */ 00074 FLA_Trinv_internal( FLA_UPPER_TRIANGULAR, diag, A11, 00075 FLA_Cntl_sub_trinv( cntl ) ); 00076 00077 /*------------------------------------------------------------*/ 00078 00079 FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR, A00, A01, /**/ A02, 00080 A10, A11, /**/ A12, 00081 /* ************** */ /* ****************** */ 00082 &ABL, /**/ &ABR, A20, A21, /**/ A22, 00083 FLA_TL ); 00084 00085 } 00086 00087 return FLA_SUCCESS; 00088 }