Re: [Boost-users] How to copy binary file to dynamic bitset?

From: Jeremy Siek (jsiek_at_[hidden])
Date: 2005-06-30 13:46:00

Hi Fuji,

The dynamic_bitset construtor that takes a input iterator over blocks 
was meant
for this kind of construction. It would be up to you to obtain/create 
the iterator.

template <typename BlockInputIterator>
explicit
dynamic_bitset(BlockInputIterator first, BlockInputIterator last,
                const Allocator& alloc = Allocator());
Effects: Constructs a bitset based on a range of blocks. Let *first be 
block number 0, *++first block number 1, etc. Block number b is used to 
initialize the bits of the dynamic_bitset in the position range 
[b*bits_per_block, (b+1)*bits_per_block). For each block number b with 
value bval, the bit (bval >> i) & 1 corresponds to the bit at position 
(b * bits_per_block + i) in the bitset (where i goes through the range 
[0, bits_per_block)).
Requires: The type BlockInputIterator must be a model of Input Iterator 
and its value_type must be the same type as Block.
Throws: An allocation error if memory is exhausted (std::bad_alloc if 
Allocator=std::allocator).

On Jun 30, 2005, at 10:16 AM, Fujinobu Takahashi wrote:

> Hello,
>
> I would like to try one-bit correlation between two one-bit sampling
> VLBI data files using powerful dynamic bitset library.
> (VLBI:Very Long Baseline Interferometer)
>
> A binary file japan.dat includes one-bit sampling data of a quasar
> received at a Japanese antenna and another binary file usa.dat
> includes one-bit sampling data of a same quasar received
> simultaneously at a US antenna. The bitset block size should be more
> than 10Mbits
>
> What kind of constructor codes should I write to copy the
> bit-pattern of each data file to each very long dynamic bitset?  I
> am sorry but I could not find any good answer from Google search.
>
> I am looking forward to helpful answer in this mail-list.
>
> Very Thanks
>
> fuji
>
>
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_______________________________________________
Jeremy Siek <jsiek_at_[hidden]>
http://www.osl.iu.edu/~jsiek
Ph.D. Student, Indiana University Bloomington
C++ Booster (http://www.boost.org)
_______________________________________________