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Mojo function

pop_count

pop_count(val: Int) -> Int

Counts the number of bits set in an integer value.

Args:

  • ​val (Int): The input value.

Returns:

The number of bits set in the input value.

pop_count[type: DType, width: Int, //](val: SIMD[type, width]) -> SIMD[$0, $1]

Counts the number of bits set in a SIMD vector of integer values.

Constraints:

The element type of the input vector must be integral.

Parameters:

  • ​type (DType): dtype used for the computation.
  • ​width (Int): SIMD width used for the computation.

Args:

  • ​val (SIMD[type, width]): The input value.

Returns:

A SIMD value where the element at position i contains the number of bits set in the element at position i of the input value.

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