COSH(3)                   386BSD Programmer's Manual                   COSH(3)

NAME
     cosh - hyperbolic cosine function

SYNOPSIS
     #include <math.h>

     double
     cosh(double x)

DESCRIPTION
     The cosh() function computes the hyperbolic cosine of x.

RETURN VALUES
     The cosh() function returns the hyperbolic cosine unless the magnitude of
     x is too large; in this event, the global variable errno is set to
     ERANGE.

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 ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                  May 2, 1991                                1