Function floor_pow_2

include/cutlass/array.h:89–92

Returns the largest power of two not greater than the argument.

/// Returns the largest power of two not greater than the argument.
CUTLASS_HOST_DEVICE
constexpr unsigned floor_pow_2(unsigned x) {
  return (x == 0 || ispow2(x)) ? x : ((floor_pow_2(x >> 1)) << 1);
}

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