sinh(3M)                                                 sinh(3M)



     NAME
          sinh, cosh, tanh - hyperbolic functions

     SYNOPSIS
          #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 hyperbolic
          sine, cosine, and tangent of their argument.

     RETURN VALUE
          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).

     SEE ALSO
          matherr(3M).


























     April, 1990                                                     1