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 9899:1999(E).

BSD                            November 20, 2002                           BSD