[Issue 4717] std.bitmanip.BitArray changes

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4717



--- Comment #6 from bearophile_hugs at eml.cc 2010-08-24 14:02:31 PDT ---
For efficiency on 64 bit systems too you may change this code from the BitArray
struct:

struct BitArray
{
    size_t len;
    uint* ptr;

...

    void init(void[] v, size_t numbits)
    in
    {
        assert(numbits <= v.length * 8);
        assert((v.length & 3) == 0);
    }



Into:

struct BitArray
{
    size_t len;
    size_t* ptr; // changed here

...

    void init(void[] v, size_t numbits)
    in
    {
        assert(numbits <= v.length * 8);
        assert(v.length % size_t.sizeof == 0); // changed here
    }

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