I am designing an application in which I need to deal with many different variables in which different sequences of bits are stored. I have very strict memory requirements so I decided to use the boost::dynamic_ bitset data type which works very well in my scenario as I need to dynamically allocate/deallocate/resize the variables.
The only problem is that I am not able to change the size of the blocks in which the dynamic_bitsets are...
5 results in 0.0040 seconds.
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boost dynamic_bitset block size issue
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How to get memory usage of an adjacency list / transitive closure?
Hi all,
I'm using the BOOST libraries to compute an adjacency list and its transitive closure. I'm defining them as follows:
What I'm doing is:Code:... typedef boost::adjacency_list<> AdjacencyList; AdjacencyList g_transitiveClosure; AdjacencyList g_adjacencyList; ...
loop start
add edge information to the g_adjacencyList
compute the transitive... -
malloc for long long array?
I'm a novice C programmer and am getting stuck on the insistence of malloc on using "size_t" for data array length. I want to use:
C insists on truncating my "long long int" to "size_t". So perhaps I have to redefine "size_t" or use an alternative to malloc. But how?Code:float *array long long int n array = malloc(n*sizeof(float))
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Roy Strachan started a topic How to initialize a structure variable to the size of the structure at compile time?in CHow to initialize a structure variable to the size of the structure at compile time?
I have seen this before and know it works (at least on an old Borland compiler). Unfortunately, though my memory is good, it's short. Using gcc how do I (can I?) initialize TESTSTRUCT.ssiz e to sizeof(TESTSTRU CT) at compile time?
first data location counter = ??
...Code:typedef struct { int ssize = x; // The size of this structure long lvar; short svar; } TES -
sizeof(struct) giving unexpected sizes. Memory alignment issues?
I noticed some quirks with C++ (not sure if this is the same for C).
I have:
sizeof(C) produces 32, which is mind boggling. Is the C++ compiler trying to align it to the memory structure? This is god awful for doing things...Code:struct A { char a[14]; }; struct B { char b[16]; }; struct C { struct A a; struct B b; };
