CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com
Results 1 to 2 of 2
  1. #1
    Join Date
    Jun 2012

    Question C bitwise macro to Java

    I'm hoping there are a few Java programmers here who are familiar with the C Programming language.

    I need to convert this C macro to java.

    #define set_bit(array,bit) ((array [(bit) / 32] |= (1L << ((bit) % 32 )))

    I believe the array is an unsigned long and the bit is an int. My best guess is that the macro is setting an entry of the unsigned long (array) to a value calculated by left shifting the value of the remainder of bit mod (%) 32. However, I'm not sure how to convert this to Java.

    Thanks for any help or if you can point me in the right direction.

  2. #2
    Join Date
    Oct 2006

    Re: C bitwise macro to Java

    Without knowing anything about java I would replace it with a function like
    void set_bit(int array[], int bit)
        array[bit / 32] |= 1L << (bit % 32 );
    Debugging is twice as hard as writing the code in the first place.
    Therefore, if you write the code as cleverly as possible, you are, by
    definition, not smart enough to debug it.
    - Brian W. Kernighan

    To enhance your chance's of getting an answer be sure to read
    and http://www.codeguru.com/forum/showthread.php?t=366302 before posting

    Refresh your memory on formatting tags here

    Get your free MS compiler here

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Windows Mobile Development Center

Click Here to Expand Forum to Full Width

On-Demand Webinars (sponsored)

We have made updates to our Privacy Policy to reflect the implementation of the General Data Protection Regulation.