cosh(), coshf(), coshl()
Compute the hyperbolic cosine
Synopsis:
#include <math.h> double cosh( double x ); float coshf( float x ); long double coshl( long double x );
Arguments:
- x
- The angle, in radians, for which you want to compute the hyperbolic cosine.
Description:
These functions compute the hyperbolic cosine (specified in radians) of x. A range error occurs if the magnitude of x is too large.
Returns:
The hyperbolic cosine of x.
If an error occurs, these functions return 0, but this is also a valid
mathematical result.
If you want to check for errors, set
errno
to 0, call the function, and then check errno again.
These functions don't change errno if no errors occurred.
Examples:
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main( void )
{
printf( "%f\n", cosh(.5) );
return EXIT_SUCCESS;
}
produces the output:
1.127626
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |