FLA_Herk_un_blk_var6.c File Reference

(r)

Functions
FLA_Error	FLA_Herk_un_blk_var6 (FLA_Obj alpha, FLA_Obj A, FLA_Obj beta, FLA_Obj C, fla_herk_t *cntl)

---

Function Documentation

FLA_Error FLA_Herk_un_blk_var6	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	beta,
		FLA_Obj	C,
		fla_herk_t *	cntl
	)

References FLA_Cont_with_1x3_to_1x2(), FLA_Determine_blocksize(), FLA_Herk_internal(), FLA_Obj_width(), FLA_ONE, FLA_Part_1x2(), FLA_Repart_1x2_to_1x3(), and FLA_Scalr_internal().

Referenced by FLA_Herk_un().

{
  FLA_Obj AL,    AR,       A0,  A1,  A2;

  dim_t b;

  FLA_Scalr_internal( FLA_UPPER_TRIANGULAR, beta, C,
                      FLA_Cntl_sub_scalr( cntl ) );

  FLA_Part_1x2( A,    &AL,  &AR,      0, FLA_RIGHT );

  while ( FLA_Obj_width( AR ) < FLA_Obj_width( A ) ){

    b = FLA_Determine_blocksize( AL, FLA_LEFT, FLA_Cntl_blocksize( cntl ) );

    FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, &A1, /**/ &A2,
                           b, FLA_LEFT );

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

    /* C = C + A1 * A1' */
    FLA_Herk_internal( FLA_UPPER_TRIANGULAR, FLA_NO_TRANSPOSE, 
                       alpha, A1, FLA_ONE, C,
                       FLA_Cntl_sub_herk( cntl ) );

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

    FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, /**/ A1, A2,
                              FLA_RIGHT );

  }

  return FLA_SUCCESS;
}