Faster Population Counts Using AVX2 Instructions

23 Nov 2016Wojciech MułaNathan KurzDaniel Lemire

Counting the number of ones in a binary stream is a common operation in database, information-retrieval, cryptographic and machine-learning applications. Most processors have dedicated instructions to count the number of ones in a word (e.g., popcnt on x64 processors)... (read more)

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