DEV Community

Pacharapol Withayasakpunt
Pacharapol Withayasakpunt

Posted on

1

e (Euler's number) explanation, and applications

It is quite well explained here -- https://betterexplained.com/articles/demystifying-the-natural-logarithm-ln/

Although, I don't truly understand, I see it as an attempt to calculate the compound interest curve; and natural logarithms as reverse calculating it.

Feel that this website is about right -- https://betterexplained.com/archives/ (and there are computer science problems, too.)

Though, another approach is to start from problems (thought or real).

BTW, my favorite in computer thingy might be,

float Q_rsqrt( float number )
{
    long i;
    float x2, y;
    const float threehalfs = 1.5F;

    x2 = number * 0.5F;
    y  = number;
    i  = * ( long * ) &y;                       // evil floating point bit level hacking
    i  = 0x5f3759df - ( i >> 1 );               // what the fuck? 
    y  = * ( float * ) &i;
    y  = y * ( threehalfs - ( x2 * y * y ) );   // 1st iteration
//  y  = y * ( threehalfs - ( x2 * y * y ) );   // 2nd iteration, this can be removed

    return y;
}
Enter fullscreen mode Exit fullscreen mode

AWS GenAI LIVE image

Real challenges. Real solutions. Real talk.

From technical discussions to philosophical debates, AWS and AWS Partners examine the impact and evolution of gen AI.

Learn more

Top comments (1)

Collapse
 
itsjzt profile image
Saurabh Sharma

E is one of my favourite number. 😍

Billboard image

Create up to 10 Postgres Databases on Neon's free plan.

If you're starting a new project, Neon has got your databases covered. No credit cards. No trials. No getting in your way.

Try Neon for Free →

👋 Kindness is contagious

Please leave a ❤️ or a friendly comment on this post if you found it helpful!

Okay