# tf.raw_ops.PopulationCount

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Computes element-wise population count (a.k.a. popcount, bitsum, bitcount).

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

[`tf.compat.v1.raw_ops.PopulationCount`](https://www.tensorflow.org/api_docs/python/tf/raw_ops/PopulationCount)

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    tf.raw_ops.PopulationCount(
        x, name=None
    )

For each entry in `x`, calculates the number of `1` (on) bits in the binary
representation of that entry.

> [!NOTE]
> **Note:** It is more efficient to first [`tf.bitcast`](https://www.tensorflow.org/versions/r2.13/api_docs/python/tf/bitcast) your tensors into `int32` or `int64` and perform the bitcount on the result, than to feed in 8- or 16-bit inputs and then aggregate the resulting counts.

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| ## Args ||
|---|---|
| `x` | A `Tensor`. Must be one of the following types: `int8`, `int16`, `int32`, `int64`, `uint8`, `uint16`, `uint32`, `uint64`. |
| `name` | A name for the operation (optional). |

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| ## Returns ||
|---|---|
| A `Tensor` of type `uint8`. ||

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