DragonFly On-Line Manual Pages

COSH(3) 	      DragonFly Library Functions Manual	       COSH(3)

NAME

cosh, coshf, coshl -- hyperbolic cosine functions

SYNOPSIS

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

DESCRIPTION

The cosh() function computes the hyperbolic cosine of x. The coshf() function is a single precision version of cosh(). The coshl() function is an extended precision version of cosh().

RETURN VALUES

If the magnitude of x is too large, cosh(x), coshf(x) and coshl(x) return infinity and set the global variable errno to ERANGE.

SEE ALSO

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

HISTORY

The cosh() function first appeared in Version 7 AT&T UNIX. DragonFly 4.3 November 3, 2013 DragonFly 4.3