[Boost-users] set() of dynamic_bitset is too slow.

2 Jun 2006

      Dear list,

I am using dynamic_bitset to store a sequence of random 0/1. The
program generates repeatedly 32bit random numbers and assign the
result to a dynamic_bitset.

				for(UINT i=0; i < m_N; ++i)
				{
					if(bit == block)			  // generate a block
					{
						ri = rng().randInt(m_max);
						bit = 0;
					}
					if((ri >> bit) & 0x1)
						succ.set(i);
					bit++;
			    }
When I profile this program, I surprisingly find out that succ.set(i)
uses >50% of the execution time. Is there anyway I can assign block by
block to dynamic_bitset, or assign sequentially so the position of i
does not have to be calculated each time?

Many thanks in advance.
Bo

[Boost-users] set() of dynamic_bitset is too slow.

Bo Peng