SINH(3M)                 DOMAIN/IX SYS5                  SINH(3M)



NAME
     sinh, cosh, tanh - hyperbolic functions

USAGE
     #include <math.h>

     double sinh (x)
     double x;

     double cosh (x)
     double x;

     double tanh (x)
     double x;


DESCRIPTION
     Sinh, cosh, and tanh return, respectively, the hyberbolic
     sine, cosine and tangent of their argument.

DIAGNOSTICS
     Sinh and cosh return HUGE (and sinh may return -HUGE for
     negative x) when the correct value would overflow and set
     errno to ERANGE.

     These error-handling procedures may be changed with the
     function matherr(3M).

NOTE
     User programs that call these routines but do not link with
     libm.a will, instead, reference older routines included in
     /lib/clib.  Support for the old (in clib) routines will be
     discontinued in a future release.  See intro(3M).

RELATED INFORMATION
     matherr(3M)

















Printed 12/4/86                                            SINH-1