cosh() — Calculate Hyperbolic Cosine
Format
#include <math.h>
double cosh(double x);
Language Level
ANSI
Threadsafe
Yes
Description
The cosh()
function
calculates the hyperbolic cosine of x. The
value x is expressed in radians.
Return Value
The cosh()
function
returns the hyperbolic cosine of x. If the
result is too large, cosh()
returns
the value HUGE_VAL and sets errno to ERANGE.
Example
This example calculates y to
be the hyperbolic cosine of x.
#include <math.h>
#include <stdio.h>
int main(void)
{
double x,y;
x = 7.2;
y = cosh(x);
printf("cosh( %lf ) = %lf\n", x, y);
}
/********************* Output should be similar to: *******************
cosh( 7.200000 ) = 669.715755
*/