C asinh()

The asinh() function computes the hyperbolic of arc sine of an argument.

C asinh() Prototype

double asinh (double x);

Function asinh() takes a single argument as double and returns the value in radians.

And, the returned value of asinh() is of type double.

For better understanding of asinh():

[Mathematics] sinh-1x = asinh(x) [In C programming] 

Two other functions asinhf() and asinhl() are also present to specifically work with float and long double respectively.

The asinh() function is defined in <math.h> header file.

C asinh() range

The range of argument for asinh() can be any value from negative to positive.

Example: C asinh() function

#include <stdio.h>
#include <math.h>
#define PI 3.141592654

int main()
	float num = 8.0;
	double result;
	result = asinh(num);
	printf("Inverse of sinh(%.2f) = %.2f in radians", num, result);
	// Converting radians to degree
	printf("\nInverse of sinh(%.2f) = %.2f in degrees", num, result);
	return 0;


Inverse of sinh(8.00)=2.78 in radians
Inverse of sinh(8.00)=159.08 in degrees
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