FLA_Syrk_ut_unb_var6.c File Reference

(r)

Functions
FLA_Error	FLA_Syrk_ut_unb_var6 (FLA_Obj alpha, FLA_Obj A, FLA_Obj beta, FLA_Obj C)

---

Function Documentation

FLA_Error FLA_Syrk_ut_unb_var6	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	beta,
		FLA_Obj	C
	)

References FLA_Cont_with_3x1_to_2x1(), FLA_Obj_length(), FLA_Part_2x1(), FLA_Repart_2x1_to_3x1(), FLA_Scalr_external(), and FLA_Syr_external().

Referenced by FLA_Syrk_ut().

{
  FLA_Obj AT,              A0,
          AB,              a1t,
                           A2;

  FLA_Scalr_external( FLA_UPPER_TRIANGULAR, beta, C );

  FLA_Part_2x1( A,    &AT, 
                      &AB,            0, FLA_BOTTOM );

  while ( FLA_Obj_length( AB ) < FLA_Obj_length( A ) ){

    FLA_Repart_2x1_to_3x1( AT,                &A0, 
                                              &a1t, 
                        /* ** */            /* *** */
                           AB,                &A2,        1, FLA_TOP );

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

    /* C := C + a1t' * a1t */ 
    FLA_Syr_external( FLA_UPPER_TRIANGULAR, alpha, a1t, C );

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

    FLA_Cont_with_3x1_to_2x1( &AT,                A0, 
                            /* ** */           /* *** */
                                                  a1t, 
                              &AB,                A2,     FLA_BOTTOM );

  }

  return FLA_SUCCESS;
}