Why is this C++ code faster than my hand-written assembly (2016)

Re:Why is this C++ code faster than my hand-written assembly... by ghettoimp on Tuesday August 22, 2017 @10:07AM (#15072510)

This probably wouldn't be a very good optimization puzzle as the cost of printing would so dominate the arithmetic operations. :(

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Re:Why is this C++ code faster than my hand-written assembly... by raphlinus on Tuesday August 22, 2017 @10:09AM (#15072534)

This is true, and I've thought about it a bit. If you were really optimizing, then maybe the goal would be stated as putting the completed answer into a memory buffer. But for now, shave as many nanoseconds as you can from the logic and pretend we don't have to worry about printing.

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