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What is the acosh() function in D?

Harris Amjad

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

Overview

The acosh() function returns the inverse hyperbolic cosine of a number.

We can see the mathematical representation of the acosh() function below.

acosh(x)=ln(x+(x21))acosh(x) =ln(x+√(x^{2}-1))

Note: std.math is required for this function.

Syntax

acosh(number)  //number can be real, float, or double.

Parameters

This function requires a number as a parameter. The value of the parameter should be greater than or equal to 1.

Return value

acosh() returns the inverse hyperbolic cosine of a number that is sent as a parameter.

Code

The following code shows how to use the acosh() function in D.

import core.stdc.stdio;
import std.stdio;
//header required for function
import std.math;
int main() {
//positive number
writeln("The value of acosh(1.5) :", acosh(1.5));
// 1
writeln("The value of acosh(1.0) :", acosh(1.0));
//less than 1
writeln("The value of acosh(0.0): ",acosh(0.0) );
writeln("The value of acosh(-1.5): ",acosh(-1.5) );
return 0;
}

Explanation

  • Line 4: We add the std.math header required for acosh() function.
  • Line 8: We calculate the inverse hyperbolic cosine of the positive number greater than 1 using acosh().
  • Line 11: We calculate inverse hyperbolic cosine of 1 using acosh().
  • Lines 14–15: We calculate the inverse hyperbolic cosine of the number less than 1 using acosh().

RELATED TAGS

d
acosh
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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