FLA_Symm_rl_blk_var7.c File Reference

(r)

Functions
FLA_Error	FLA_Symm_rl_blk_var7 (FLA_Obj alpha, FLA_Obj A, FLA_Obj B, FLA_Obj beta, FLA_Obj C, fla_symm_t *cntl)

---

Function Documentation

FLA_Error FLA_Symm_rl_blk_var7	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	B,
		FLA_Obj	beta,
		FLA_Obj	C,
		fla_symm_t *	cntl
	)

References FLA_Cont_with_1x3_to_1x2(), FLA_Cont_with_3x3_to_2x2(), FLA_Determine_blocksize(), FLA_Gemm_internal(), FLA_Obj_length(), FLA_ONE, FLA_Part_1x2(), FLA_Part_2x2(), FLA_Repart_1x2_to_1x3(), FLA_Repart_2x2_to_3x3(), FLA_Scal_internal(), and FLA_Symm_internal().

Referenced by FLA_Symm_rl().

{
  FLA_Obj ATL,   ATR,      A00, A01, A02, 
          ABL,   ABR,      A10, A11, A12,
                           A20, A21, A22;

  FLA_Obj BL,    BR,       B0,  B1,  B2;

  FLA_Obj CL,    CR,       C0,  C1,  C2;

  dim_t b;

  FLA_Scal_internal( beta, C,
                     FLA_Cntl_sub_scal( cntl ) );

  FLA_Part_2x2( A,    &ATL, &ATR,
                      &ABL, &ABR,     0, 0, FLA_BR );

  FLA_Part_1x2( B,    &BL,  &BR,      0, FLA_RIGHT );

  FLA_Part_1x2( C,    &CL,  &CR,      0, FLA_RIGHT );

  while ( FLA_Obj_length( ABR ) < FLA_Obj_length( A ) ){

    b = FLA_Determine_blocksize( ATL, FLA_TL, FLA_Cntl_blocksize( cntl ) );

    FLA_Repart_2x2_to_3x3( ATL, /**/ ATR,       &A00, &A01, /**/ &A02,
                                                &A10, &A11, /**/ &A12,
                        /* ************* */   /* ******************** */
                           ABL, /**/ ABR,       &A20, &A21, /**/ &A22,
                           b, b, FLA_TL );

    FLA_Repart_1x2_to_1x3( BL,  /**/ BR,        &B0, &B1, /**/ &B2,
                           b, FLA_LEFT );

    FLA_Repart_1x2_to_1x3( CL,  /**/ CR,        &C0, &C1, /**/ &C2,
                           b, FLA_LEFT );

    /*------------------------------------------------------------*/

    /* C0 = C0 + B1 * A10 */
    FLA_Gemm_internal( FLA_NO_TRANSPOSE, FLA_NO_TRANSPOSE, 
                       alpha, B1, A10, FLA_ONE, C0,
                       FLA_Cntl_sub_gemm1( cntl ) );

    /* C1 = C1 + B0 * A10' */
    FLA_Gemm_internal( FLA_NO_TRANSPOSE, FLA_TRANSPOSE, 
                       alpha, B0, A10, FLA_ONE, C1,
                       FLA_Cntl_sub_gemm2( cntl ) );

    /* C1 = C1 + B1 * A11 */
    FLA_Symm_internal( FLA_RIGHT, FLA_LOWER_TRIANGULAR, 
                       alpha, A11, B1, FLA_ONE, C1,
                       FLA_Cntl_sub_symm( cntl ) );
    /*------------------------------------------------------------*/

    FLA_Cont_with_3x3_to_2x2( &ATL, /**/ &ATR,       A00, /**/ A01, A02,
                            /* ************** */  /* ****************** */
                                                     A10, /**/ A11, A12,
                              &ABL, /**/ &ABR,       A20, /**/ A21, A22,
                              FLA_BR );

    FLA_Cont_with_1x3_to_1x2( &BL,  /**/ &BR,        B0, /**/ B1, B2,
                              FLA_RIGHT );

    FLA_Cont_with_1x3_to_1x2( &CL,  /**/ &CR,        C0, /**/ C1, C2,
                              FLA_RIGHT );

  }

  return FLA_SUCCESS;
}