Mathematical Library Functions                           sinh(3M)



NAME
     sinh, sinhf, sinhl - hyperbolic sine function

SYNOPSIS
     c99 [ flag... ] file... -lm [ library... ]
     #include 

     double sinh(double x);


     float sinhf(float x);


     long double sinhl(long double x);


DESCRIPTION
     These functions compute the hyperbolic sine of x.

RETURN VALUES
     Upon  successful  completion,  these  functions  return  the
     hyperbolic sine of x.


     If the result would cause an overflow, a range error  occurs
     and  ]HUGEVAL,  ]HUGEVALF,  and  ]HUGEVAL (with the same
     sign as x) is returned as appropriate for the  type  of  the
     function.


     If x is NaN, a NaN is returned.


     If x is ]0 or ]Inf, x is returned.


     For exceptional cases, matherr(3M) tabulates the  values  to
     be returned by acos() as specified by SVID3 and XPG3.

ERORS
     These functions will fail if:

     Range Error    The result would cause an overflow.

                    If the integer expression (matherrhandling &
                    MATHEREXCEPT)  is  non-zero,  the  overflow
                    floating-point exception is raised.

                    The asinh() function sets errno to ERANGE  if
                    the result would cause an overflow.





SunOS 5.11          Last change: 12 Jul 2006                    1






Mathematical Library Functions                           sinh(3M)



USAGE
     An application wanting to check for exceptions  should  call
     feclearexcept(FEALEXCEPT) before calling these functions.
     On  return,  if  fetestexcept(FEINVALID    FEDIVBYZERO  
     FEOVERFLOW    FEUNDERFLOW)  is non-zero, an exception has
     been raised. An application should either examine the return
     value  or check the floating point exception flags to detect
     exceptions.


     An application can  also  set  errno  to  0  before  calling
     asinh().  On  return,  if  errno  is  non-zero, an error has
     occurred. The asinhf() and asinhl()  functions  do  not  set
     errno.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Standard                    
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     asinh(3M),  cosh(3M),  feclearexcept(3M),  fetestexcept(3M),
     isnan(3M),   math.h(3HEAD),  matherr(3M),  tanh(3M),  attri-
     butes(5), standards(5)





















SunOS 5.11          Last change: 12 Jul 2006                    2