FLA_Syrk_un_unb_var5.c File Reference

(r)

Functions
FLA_Error	FLA_Syrk_un_unb_var5 (FLA_Obj alpha, FLA_Obj A, FLA_Obj beta, FLA_Obj C)

---

Function Documentation

FLA_Error FLA_Syrk_un_unb_var5	(	FLA_Obj	alpha,
		FLA_Obj	A,
		FLA_Obj	beta,
		FLA_Obj	C
	)

References FLA_Cont_with_1x3_to_1x2(), FLA_Obj_width(), FLA_Part_1x2(), FLA_Repart_1x2_to_1x3(), FLA_Scalr_external(), and FLA_Syr_external().

Referenced by FLA_Syrk_un().

{
  FLA_Obj AL,    AR,       A0,  a1,  A2;

  FLA_Scalr_external( FLA_UPPER_TRIANGULAR, beta, C );

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

  while ( FLA_Obj_width( AL ) < FLA_Obj_width( A ) ){

    FLA_Repart_1x2_to_1x3( AL,  /**/ AR,        &A0, /**/ &a1, &A2,
                           1, FLA_RIGHT );

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

    /* C := C + a1 * a1' */ 
    FLA_Syr_external( FLA_UPPER_TRIANGULAR, alpha, a1, C );

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

    FLA_Cont_with_1x3_to_1x2( &AL,  /**/ &AR,        A0, a1, /**/ A2,
                              FLA_LEFT );

  }

  return FLA_SUCCESS;
}