Sorry for the very late reply. On Thu, 15 Jul 2004 09:54:16 -0700, "Terence Wilson" <tez@latte.com> wrote:
I have an unsigned char array which I would like to represent as an array of bits in order to perform bit shift operations.
One of the dynamic_bitset constructors takes two input iterators.
My code is as follows:
// rotate bits as one large bitset
typedef unsigned char octet;
Please, note that the name "octet" is unadvisable, as unsigned char may have *more* than 8 bits (but not less).
void Normalize(boost::shared_array<octet> RawHash, int RawHashLength) { int ShiftLength=7;
boost::dynamic_bitset<octet> HashBits; for (int i=0; i<RawHashLength; ++i) { HashBits.append(RawHash[i]); }
boost::dynamic_bitset<octet> ShiftedBits=HashBits << ShiftLength; }
A couple of issues:
1) How do I get bits out as unsigned chars after the shift operation?
There's a to_block_range function. But, please, check the shared_array documentation. BTW, if possible for your scenario, it would be preferable to limit conversions from/to arrays to one direction (for instance, only from dynamic_bitset<> to an array) or to avoid them at all.
2) I get a compiler warning, it doesn't seem to like me using unsigned char. I am using Visual Studio 2003-
Does the CVS version warn too? -- Genny.