bitshift of integer type with K=0 does not behave as expected + patch

[John W. Eaton]

On 12-Mar-2009, Seb Astien wrote:

| Re-sending with a patch to fix it this time.
| 
| Seb.
| 
| Bug report for Octave 3.0.3 configured for i686-pc-linux-gnu
| 
| Description:
| -----------
| 
|  bitshift of uint32 value with K=0 does not behave as expected
| 
| 
| Repeat-By:
| ---------
| 
| debug> bitshift(372607261,0,10)
| ans =  285
| debug> bitshift(uint32(372607261),0,10)
| ans = 372607261
| 
| 
| How to fix it
| ---------------
| 
| --- liboctave/oct-inttypes.h	2009-03-12 14:01:54.000000000 +0100
| *************** bitshift (const octave_int<T>& a, int n,
| *** 556,562 ****
|     else if (n < 0)
|       return (a >> -n) & mask;
|     else
| !     return a;
|   }
| 
|   #define OCTAVE_INT_CMP_OP(OP) \
| --- 556,562 ----
|     else if (n < 0)
|       return (a >> -n) & mask;
|     else
| !     return a & mask;
|   }

I made this change.

Thanks,

jwe