sinh(3M)              MATHEMATICAL LIBRARY               sinh(3M)



NAME
     sinh, sinhf, cosh, coshf, tanh, tanhf, asinh, acosh, atanh -
     hyperbolic functions

SYNOPSIS
     cc [flag ...] file ...  -lm [library ...]

     #include <math.h>

     double sinh (double x);

     float sinhf (float x);

     double cosh (double x);

     float coshf (float x);

     double tanh (double x);

     float tanhf (float x);

     double asinh (double x);

     double acosh (double x);

     double atanh (double x);

DESCRIPTION
     sinh, cosh,  and  tanh  and  the  single-precision  versions
     sinhf, coshf, and tanhf return, respectively, the hyberbolic
     sine, cosine, and tangent of their argument.

     asinh, acosh, and atanh return,  respectively,  the  inverse
     hyperolic sine, cosine, and tangent of their argument.

SEE ALSO
     matherr(3M).

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

     acosh returns NaN and sets errno to EDOM when the argument x
     is  less  than  1.   A  message  indicating  DOMAIN error is
     printed on the standard error output.

     atanh returns NaN and sets errno to EDOM if | x| > 1.  If  |
     x|  =  1,  a message indicating SING error is printed on the
     standard error output; if | x| > 1 the message will indicate
     DOMAIN error.




                   Last change: Math Libraries                  1

sinh(3M)              MATHEMATICAL LIBRARY               sinh(3M)



     Except when  the  -Xc  compilation  option  is  used,  these
     error-handling  procedures  may be changed with the function
     matherr.  When the -Xa or -Xc compilation options are  used,
     HUGEVAL  is  returned instead of HUGE and no error messages
     are printed.


















































                   Last change: Math Libraries                  2