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<a href="https://github.com/google/benchmark/commit/<a class=hub.com/google/benchmark/commit/<a class="double-link" href="https://git"><a class=hub.com/google/benchmark/commit/b123abdcf4a004ffadca7834d614bdeb36c843c0">b123abdcf<a href="https://github.com/google/benchmark/commit/b123abdcf4a004ffadca7834d614bdeb36c843c0">&lt;a href=&quot;https://github.com/google/benchmark/commit/b123abdcf4a004ffadca7834d614bdeb36c843c0&quot;&gt;&amp;quot;&gt;Add Iteration-related Counter::Flags. Fixes #618 (#621)

Inspired by these [two](https://github.com/darktable-org/rawspeed/commit/&lt;/a&gt;&lt;a class=&quot;double-link&quot; href=&quot;https://github.com/google/benchmark/commit/&lt;a class=&quot;double-link&quot; href=&quot;https://github.com/google/benchmark/commit/a1ebe07bea5738f8607b48a7596c172be249590e&quot;&gt;a1ebe07be&lt;/a&gt;">a1ebe07be</a><a href="https://github.com/google/benchmark/commit/b123abdcf4a004ffadca7834d614bdeb36c843c0">) [bugs](https://github.com/darktable-org/rawspeed/commit/</a><a class="double-link" href="https://github.com/google/benchmark/commit/<a class="double-link" href="https://github.com/google/benchmark/commit/0891555be56b24f9f4af716604cedfa0da1efc6b">0891555be</a>">0891555be</a><a href="https://github.com/google/benchmark/commit/b123abdcf4a004ffadca7834d614bdeb36c843c0">) in my code due to the lack of those i have found fixed in my code:
* `kIsIterationInvariant` - `* state.iterations()`
  The value is constant for every iteration, and needs to be **multiplied** by the iteration count.
* `kAvgIterations` - `/ state.iterations()`
  The is global over all the iterations, and needs to be **divided** by the iteration count.

They play nice with `kIsRate`:
* `kIsIterationInvariantRate`
* `kAvgIterationsRate`.

I'm not sure how  meaningful they are when combined with `kAvgThreads`.
I guess the `kIsThreadInvariant` can be added, too, for symmetry with `kAvgThreads`.

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