util/bitset: Add BITSET_COUNT helper
Expressible as a prefix sum but that's a bit unnatural, so add a convenience helper.
Signed-off-by: Alyssa Rosenzweig alyssa@collabora.com
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Expressible as a prefix sum but that's a bit unnatural, so add a convenience helper.
Signed-off-by: Alyssa Rosenzweig alyssa@collabora.com