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By dotCore
via hbfs.wordpress.com
Submitted: Jan 07 2014 / 13:56

In the discussion of The Speed of GCD, Daniel Lemire remarked that one could use the compiler-specific intrinsic function __builtin_ctz to get a good speed-up on binary GCD. That remark made me look into all the others intrinsics and built-ins offered by GCC.
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