double cosh ( double x );
float cosh ( float x );
long double cosh ( long double x ); |
<cmath> |
Compute hyperbolic cosine
Returns the hyperbolic cosine of x.
Parameters
- x
- Floating point value.
Return Value
Hyperbolic cosine of
x.
If the the magnitude of the result is so large that it cannot be represented in an object of the return type, the function returns
HUGE_VAL, and the value of the global variable
errno is set to the
ERANGE value.
Portability
In C, only the
double version of this function exists with this name.
Example
/* cosh example */
#include <stdio.h>
#include <math.h>
int main ()
{
double param, result;
param = log(2.0);
result = cosh (param);
printf ("The hyperbolic cosine of %lf is %lf.\n", param, result );
return 0;
}
|
Output:
The hyperbolic cosine of 0.693147 is 1.250000.
|
See also
| sinh | Compute hyperbolic sine (function) |
| tanh | Compute hyperbolic tangent (function) |
