NAME

cosh — hyperbolic cosine function

SYNOPSIS

#include <math.h>

double
cosh(double x);

long double
coshl(long double x);

float
coshf(float x);

DESCRIPTION

The coshf() function computes the hyperbolic cosine of x.

SPECIAL VALUES

cosh(±0) returns 1.

cosh(±infinity) returns +infinity.

SEE ALSO

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

STANDARDS

The cosh() function conforms to ISO/IEC 9899:2011.