NAME

cosh, coshf, coshl — hyperbolic cosine functions

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double
cosh(double x);

float
coshf(float x);

long double
coshl(long double x);

DESCRIPTION

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

SEE ALSO

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

STANDARDS

The cosh() function conforms to ISO/IEC 9899:1990 (“ISO C90”).

HISTORY

The cosh() function first appeared in Version 7 AT&T UNIX.