https://issues.dlang.org/show_bug.cgi?id=12952

          Issue ID: 12952
           Summary: size_t input for bswap and bitswap
           Product: D
           Version: D2
          Hardware: x86_64
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: safety0ff.bugz@gmail.com

Currently only 32-bit bitswap and bswap are provided by core.bitop.
It would be better if size_t versions of bitswap and bswap were available.

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