SINH(1)                     C LIBRARY FUNCTIONS                      SINH(1)

NAME
     sinh, cosh, tanh - hyperbolic trigonometric functions

SYNOPSIS
     double sinh(double x);

     double cosh(double x);

     double tanh(double x);

INCLUDE FILE
     math.h

DESCRIPTION
     The hyperbolic trigonometric functions all take double argument and
     return a double. To compute these function for float arguments, casting
     to a double must be performed when the function is called.

     sinh() returns the hyperbolic sinus of a double.

     cosh() returns the hyperbolic cosines of a double.

     tanh() returns the hyperbolic tangent of a double.

DIAGNOSTICS
     These functions produce a domain error if called with an argument
     outside their domain range. The value returned by the function is then
     system dependent, but the system assigns the value EDOM to errno.

     A range error occurs when the value to be returned is defined
     mathematically, but cannot be represented as a double. If the value is
     to large in magnitude (overflow), then either HUGE_VAL or -HUGE_VAL is
     returned. If the value is to small in magnitude (underflow), then zero
     is returned. On overflow, errno is set to ERANGE.

SEE ALSO
     cosh(), exp(), errno.