The OpenD Programming Language

_popcnt

core bitop

Calculates the number of set bits in an integer using the X86 SSE4 POPCNT instruction. POPCNT is not available on all X86 CPUs.

  1. ushort _popcnt(ushort x)
  2. int _popcnt(uint x)
  3. int _popcnt(ulong x)
    version(DigitalMars && AnyX86 && X86_64)
    nothrow @safe @nogc pure
    int
    _popcnt
    (
    ulong x
    )

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