COSH(3) BSD Programmer's Manual COSH(3)

## NAME

**cosh**, **coshf** - hyperbolic cosine function

## LIBRARY

libm

## SYNOPSIS

**#include <math.h>**
*double*
**cosh**(*double x*);
*float*
**coshf**(*float x*);

## DESCRIPTION

The **cosh**() and **coshf**() functions compute the hyperbolic cosine of *x*.

## RETURN VALUES

If the magnitude of x is too large, **cosh**(*x*) and **coshf**(*x*) return Inf and
sets the global variable *errno* to ERANGE.

## SEE ALSO

acos(3), asin(3), atan(3), atan2(3), cos(3), math(3), sin(3), sinh(3),
tan(3), tanh(3)

## STANDARDS

The **cosh**() function conforms to ANSI X3.159-1989 ("ANSI C").
MirOS BSD #10-current May 2, 1991 1

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