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  • Hash : 9d58bbd4
    Author : Michael Forney
    Date : 2019-06-04T14:01:02

    Use bitwise test instead of popcount to check if one bit is set We don't need to determine the total number of bits set to determine if exactly one is set. Additionally, on x86_64 without any -march=* flag, __builtin_popcount will get compiled to a function call to the compiler runtime (on gcc), or a long sequence of bit operations (on clang). Signed-off-by: Michael Forney <mforney@mforney.org>

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