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Re:John Gustafson’s crusade to replace floating point with s... by Tuna-Fish on Tuesday July 09, 2019 @05:27AM (#20390147)
64-bit x86 CPUs are defined to support SSE2 as a minimum, and all 64-bit operating systems use it by default.

For 32-bit systems, you still theoretically have to check, but I think every halfway modern compiler also uses SSE2 as the default target.

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