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ComputingCMath.h

coshf

Hyperbolic cosine function
+ View other versions (5)

Interface

#include <math.h>
double cosh (double x)
long coshl (long double x)
float coshf (float x)

Description

The cosh function computes the hyperbolic cosine of x, which is defined through:

Example:

Example - Hyperbolic cosine function
Workings
#include <stdio.h>
#include <math.h>
int main(void)
{
  double x = 0.5;
  double result = cosh(x);
  printf("The hyperbolic cosine of %lf is %lf\n", x, result);
  return 0;
}
Solution
Output:

The hyperbolic cosine of 0.500000 is 1.127626

Special Values

cosh ( ±0 ) returns 1.

cosh ( ±∞ ) returns +∞.

Standards

The cosh function conforms to ISO/IEC 9899:1999(E).