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  SINH(3M)                 (Math Libraries)                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 hyberbolic
       sine, cosine and tangent of their argument.

  SEE ALSO
       matherr(3M).

  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).













  Page 1                                                   May 1989