Re: bitshift of int8, int16, etc?

[David Bateman]

I believe the attached patch is what is needed to make the bitshift of
signed integer types the same as bitshifts of floating point numbers

D.


-- 
David Bateman                                address@hidden
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*** liboctave/oct-inttypes.h.~1.29.~    2007-04-05 18:14:08.000000000 +0200
--- liboctave/oct-inttypes.h    2007-06-25 14:35:09.469552617 +0200
***************
*** 295,308 ****
    template <class T2>
    octave_int<T>& operator <<= (const T2& x)
    {
!     ival = ((ival << x) > std::numeric_limits<T>::max ()) ? 0 : (ival << x);
      return *this;
    }
  
    template <class T2>
    octave_int<T>& operator >>= (const T2& x)
    {
!     ival >>= x;
      return *this;
    }
  
--- 295,311 ----
    template <class T2>
    octave_int<T>& operator <<= (const T2& x)
    {
!     ival = ival << x;
      return *this;
    }
  
    template <class T2>
    octave_int<T>& operator >>= (const T2& x)
    {
!     if (ival < 0)
!       ival = - (((-ival) >> x) & std::numeric_limits<T>::max());
!     else
!       ival = ival >> x;
      return *this;
    }