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Version: 1.0.0b1
For the complete Mojo documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /docs/manual/basics.md).

pop_count

pop_count(val: Int) -> Int

Counts the number of bits set in an integer value.

Args:

  • ​val (Int): The input value.

Returns:

Int: The number of bits set in the input value.

pop_count[dtype: DType, width: Int, //](val: SIMD[dtype, width]) -> SIMD[dtype, width]

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:

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

Args:

Returns:

SIMD[dtype, width]: 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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