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• Detect Shift Overflow

  This is an intellectual exercise: when shifts a 32-bit unsigned integer in C++, how to detect whether the calculation overflows efficiently? Here is the function prototype. shl_overflow will return true if v << cl overflows (cl is between 0 and Read More... Posted Saturday, June 13, 2009 6:19 AM by xiangfan | 0 Comments Filed under: C++, VC, Optimization