arcosh
The C++
acosh()function returns the arc hyperbolic cosine of a number in radians and it takes a single argument.
Syntax
acosh(x)
Parameters
The acosh() function takes a one argument which is greater or equal to 1.
If the argument is less than 1, a domain error occurs.
Return value
Returns a value in the range [0, ∞].If the argument is less than 1, it returns NaN (not a number).
acosh() prototype [As of C++ 11 standard]
double acosh(double x); float acosh(float x); long double acosh(long double x); double acosh(T x); // For integral type
Example 1: C++ acosh()
#include <stdio.h> #include <math.h> int main () { double param, result; param = 12.1212; result = acosh(param); printf ("The area hyperbolic cosine of %f is %f radians.\n", param, result); return 0; }
Output
The area hyperbolic cosine of 12.121200 is 3.186397 radians.
Example 2 : C++ acosh() ( With Negative Value )
As i said, If the argument is less than 1 , then
acosh()returns NaN i.e. not a number.
#include <stdio.h> #include <math.h> int main () { double param, result; param = -11.1; result = acosh(param); printf ("%f", result); return 0; }
Output
-nan