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From: Student Project <student@invalid.invalid>
Newsgroups: comp.lang.c++
Subject: constexpr is really very smart!
Date: Sun, 15 Dec 2024 20:20:42 +0000
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The constexpr is really very smart because it can speed up algorithms 
1000 times according to Dave, Microsoft retired engineer. He has proved it 
by creating this video:

<https://youtu.be/8-VZoXn8f9U?si=iy1UimoWcaLG31Xi>

On my computer it took 270 microseconds to calculate fib(35) like in his 
example. It was almost instant at the blink of the eyes.

> D:\CmdLine\C_Cpp\Chrono02>program
> Fibonacci_c: 9227465
> Time Taken: 270
> D:\CmdLine\C_Cpp\Chrono02>program
> Fibonacci_c: 9227465
> Time Taken: 257
> D:\CmdLine\C_Cpp\Chrono02>program
> Fibonacci_c: 9227465
> Time Taken: 171
> D:\CmdLine\C_Cpp\Chrono02>program
> Fibonacci_c: 9227465
> Time Taken: 176

Amazing.